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Common pheasant

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Common pheasant
Temporal range: Pleistocene–present
Male ("cock")
Female ("hen")
both in England
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Galliformes
Family: Phasianidae
Genus: Phasianus
Species:
P. colchicus
Binomial name
Phasianus colchicus
Geographical distribution of common pheasant
  Native   Introduced
Synonyms

Phasianus phasis

Male of hybrid stock in Poland
Note thin white neck-band due to a ring-necked subspecies' contribution to hybrid gene pool

The common pheasant (Phasianus colchicus), ring-necked pheasant, or blue-headed pheasant, is a bird in the pheasant family (Phasianidae). The genus name comes from Latin phasianus 'pheasant'. The species name colchicus is Latin for 'of Colchis' (modern day Georgia), a country on the Black Sea where pheasants became known to Europeans.[2] Although Phasianus was previously thought to be closely related to the genus Gallus, the genus of junglefowl and domesticated chickens, recent studies show that they are in different subfamilies, having diverged over 20 million years ago.[3][4]

It is native to Asia, where it is widespread, and also the extreme southeast of Europe in the northern foothills of the Caucasus Mountains. It has been widely introduced elsewhere as a game bird. In parts of its range, mainly in places where none of its relatives occur such as in Europe, where it is naturalised, it is simply known as the "pheasant". Ring-necked pheasant is both the collective name for a number of subspecies and their intergrades that have white neck rings, and the name used for the species as a whole in North America.

It is a well-known gamebird, among those of more than regional importance perhaps the most widespread and ancient one in the whole world. The common pheasant is one of the world's most hunted birds;[5] it has been introduced for that purpose to many regions, and is also common on game farms where it is commercially bred. The ring-necked subspecies group in particular are commonly bred and were introduced to many parts of the world; the game farm stock, though no distinct breeds have been developed yet, can be considered semi-domesticated. The ring-necked pheasant is the state bird of South Dakota, one of only two US state birds that is not a species native to the United States.

The green pheasant (P. versicolor) of Japan is sometimes considered a subspecies of the common pheasant. Though the species produce fertile hybrids wherever they coexist, this is simply a typical feature among fowl (Galloanseres), in which postzygotic isolating mechanisms are slight compared to most other birds. The species apparently have somewhat different ecological requirements and at least in its typical habitat, the green pheasant outcompetes the common pheasant. The introduction of the latter to Japan has therefore largely failed.

Description

[edit]
Flavistic hen
Phasianus colchicus egg at MHNT
Skeleton MHNT

There are many colour forms of the male common pheasant, ranging in colour from nearly white to almost black in some melanistic examples. These are due to captive breeding and hybridisation between subspecies and with the green pheasant, reinforced by continual releases of stock from varying sources to the wild. For example, the "ring-necked pheasants" common in Europe, North America and Australia do not pertain to any specific taxon, they rather represent a stereotyped hybrid swarm.[6] Body weight can range from 0.5 to 3 kg (1 to 7 lb), with males averaging 1.2 kg (2 lb 10 oz) and females averaging 0.9 kg (2 lb 0 oz).[7] Wingspan ranges from 56–86 cm (22–34 in).[8]

The adult male common pheasant of the nominate subspecies Phasianus colchicus colchicus is 60–89 cm (23+12–35 in) in length with a long brown streaked black tail, accounting for almost 50 cm (20 in) of the total length. The body plumage is barred bright gold or fiery copper-red and chestnut-brown plumage with iridescent sheen of green and purple; but rump uniform is sometimes blue. The wing coverage is white or cream and black-barred markings are common on the tail.[9] The head is bottle green with a small crest and distinctive red wattle. P. c. colchicus and some other races lack a white neck ring.[10] Behind the face are two ear-tufts, that make the pheasant appear more alert.[11]

The female (hen) and juveniles are much less showy, with a duller mottled brown plumage all over and measuring 50–63 cm (19+12–25 in) long including a tail of around 20 cm (8 in). Juvenile birds have the appearance of the female with a shorter tail until young males begin to grow characteristic bright feathers on the breast, head and back at about 10 weeks after hatching.[9]

The green pheasant (P. versicolor) is very similar, and hybridisation often makes the identity of individual farmed birds difficult to determine. Green pheasant males on average have a shorter tail than the common pheasant and have darker plumage that is uniformly bottle-green on the breast and belly; they always lack a neck ring. Green pheasant females are darker, with many black dots on the breast and belly.

In addition, various colour mutations are commonly encountered, mainly melanistic (black) and flavistic (isabelline or fawn) specimens. The former are rather commonly released in some areas and are named "tenebrosus pheasant"[citation needed] or simply "melanistic mutant".[12]

Taxonomy and systematics

[edit]
Hybrid male in Europe, intermediate between Mongolian ringneck and Caucasus group phenotype

This species was first scientifically described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae under its current scientific name. The common pheasant is distinct enough from any other species known to Linnaeus for a laconic [Phasianus] rufus, capîte caeruleo, "a red pheasant with blue head", to serve as entirely sufficient description. The bird had been extensively discussed before Linnaeus established binomial nomenclature so was already well-known. His sources are the Ornithologia of Ulisse Aldrovandi,[13] Giovanni Pietro Olina's Uccelliera,[14] John Ray's Synopsis methodica Avium & Piscium,[15] and A Natural History of the Birds by Eleazar Albin.[16] Therein—essentially the bulk of the ornithology textbooks of his day—the species is simply named "the pheasant" in the books' respective languages. Whereas in most other species, Linnaeus felt it warranted to cite plumage details from his sources, in the common pheasant's case he simply referred to the reason of the bird's fame: principum mensis dicatur.[verification needed] The type locality is given simply as "Africa, Asia".[17]

However, the bird does not occur in Africa, except perhaps in Linnaeus's time in Mediterranean coastal areas where they might have been introduced during the Roman Empire. The type locality was later fixed to the Rioni River in western Georgia, known as Phasis to the Ancient Greeks. These birds, until the modern era, constituted the bulk of the introduced stock in parts of Europe that was not already present; the birds described by Linnaeus's sources, though typically belonging to such early introductions, would certainly have more alleles in common with the transcaucasian population than with others. The scientific name is Latin for "pheasant from Colchis", colchicus referring to the west of modern-day Georgia;[18] the Ancient Greek term corresponding to the English "pheasant" is Phasianos ornis (Φασιανὸς ὂρνις), "bird of the river Phasis".[19] Although Linnaeus included many Galliformes in his genus Phasianius such as the domestic chicken and its wild ancestor the red junglefowl, nowadays Gallus gallus, today only the common and the green pheasant are placed in this genus. As the latter was not known to Linnaeus in 1758, the common pheasant is treated as the type species of Phasianus.

In the US, common pheasants are widely known as "ring-necked pheasants". One North American writer called them "chinks" or, in Montana, "phezzens".[20] In China, meanwhile, the species is properly called zhi ji (雉鸡), "pheasant-fowl", essentially implying the same as the English name "common pheasant". As elsewhere, P. colchicus is such a familiar bird in China that it is usually just referred to as shan ji (山雞), "mountain chicken",[21] a Chinese term for pheasants in general.

As of 2005, it had the smallest known genome of all living amniotes, only 0.97 pg (970 million base pairs), roughly one-third of the human genome's size; however, the black-chinned hummingbird is the current holder of the smallest known amniote genome.[22]

Subspecies

[edit]
Chinese ringneck-type male (note grey rump) with very pale female, illustrating the dramatic difference in both colour and size between sexes as per sexual dimorphism

There are about 30 subspecies in five[23] to eight[24] groups. These can be identified by the male plumage, namely presence or absence of a white neck-ring and/or a white superciliary stripe, the colour of the uppertail (rump) and wing coverts, and the colour of crown, chest, upper back, and flank feathers. As noted above, introduced populations have mixed the alleles of various races by various amounts, differing according to the original stock used for introductions and what natural selection according to climate and habitat has made of that.

An investigation into the genetic relationships of subspecies suggested that the common pheasant originated from the forests of southeastern China.[25] Initial divergence is thought to have occurred around 3.4 Mya. The lack of agreement between morphology-based subspecies delimitation and their genetic relationships is thought to be attributed to past isolation followed by more recent population mixing as the pheasant has expanded its range across the Palaearctic.[26]

Sometimes this species is split into the Central Asian common and the East Asian ring-necked pheasants, roughly separated by the arid and high mountainous regions of Turkestan. However, while the western and eastern populations probably were entirely separate during the Zyryanka glaciation when deserts were more extensive,[27] this separation was not long enough for actual speciation to occur. Today, the largest variety of colour patterns is found where the western and eastern populations mix, as is to be expected. Females usually cannot be identified even to subspecies group with certainty.

Many subspecies are in danger of disappearing due to hybridisation with introduced birds. The last black-necked pheasant (P. c. colchicus) population in Europe survives in Greece in the delta of the river Nestos, where in 2012 the population was estimated 100–250 individuals.[26]

The subspecies groups,[24] going from west to east, and some notable subspecies are:

Subspecies Range Description Image
WESTERN CLADE –
Red-rumped pheasants:
The lower back, rump, and upper tail-coverts are of a bronze-red, maroon, or rusty-orange general colour, sometimes glossed with oily green; black bars on the tail generally narrow.
P. c. colchicus group –
Black-necked pheasants:
P. c. colchicus, P. c. septentrionalis, P. c. talischensis, P. c. persicus
Caucasus to W. Turkestan; early (Roman or pre-Roman) introduced into Turkey (Samsun area)[28] and Greece (Nestos delta)[26] No neck ring. Wing coverts buff to brown (in P. c. persicus greyish white or buffy white), uppertail coverts rusty to chestnut
P. c. chrysomelas / P. c. principalis group –
White-winged pheasants:
P. c. principalis, P. c. zarudnyi, P. c. zerafschanicus, P. c. bianchii, P. c. chrysomelas, P. c. shawii
Central Turkestan and western Tarim Basin No or vestigial neck ring. Wing coverts whitish, uppertail coverts and general plumage hue bronze to brown

P. c. mongolicus group –
Kyrghyz pheasants:
P. c. turcestanicus, P. c. mongolicus
NE Turkestan and adjacent Xinjiang. Note that, despite its name, P. c. mongolicus does not occur in Mongolia. Broad neck ring. Wing coverts white, uppertail coverts hue rusty to chestnut, general plumage hue copper
P. c. tarimensis group –
Tarim pheasants:
P. c. tarimensis
SE Turkestan around the eastern Tarim Basin No or vestigial neck ring. Wing coverts buff to brown, uppertail coverts dark khaki to light olive
EASTERN CLADE –
Grey-rumped pheasants:
The lower back, rump, and upper tail-coverts are of a light and more or less lavender-blue, greenish- or yellowish-grey, or olive-greenish colour; a rusty orange patch on each side of the rump; black tail-bars generally broad.
P. c. elegans group –
Yunnan pheasants:
P. c. elegans, P. c. rothschildi
Eastern Tibet, western Sichuan, northwestern and southeastern Yunnan, northwestern Vietnam and northern Myanmar. White neck collar and orbital lines are absent. A broad band of richly glossed dark green or bluish green colour runs down the underparts, completely separating the brassy-chestnut of the sides of the chest. Crown dark green. Uppertail coverts light bluish grey.
P. c. strauchi / P. c. vlangalii group –
Western grey-rumped pheasants:
P. c. suehschanensis, P. c. vlangalii, P. c. satscheuensis, P. c. edzinensis, P. c. strauchi, P. c. sohokhotensis, P. c. alaschanicus, P. c. kiangsuensis
Qaidam Basin, eastern Qinghai, northeastern Sichuan, Inner Mongolia, Gansu, Ningxia, Shanxi, Shaanxi, western Hebei. Note that, despite its name, P. c. kiangsuensis does not occur in Jiangsu. The white neck collar and orbital lines are usually either absent (P. c. suehschanensis) or rather narrow, often not complete. Brassy-chestnut on chest dominating over glossy green colour (which only in P. c. suehschanensis reaches from foreneck to the belly). Crown usually dark green.
P. c. torquatus group –
Chinese ring-necked pheasants:
P. c. hagenbecki, P. c. pallasi, P. c. karpowi, P. c. torquatus, P. c. takatsukasae, P. c. decollatus
Widespread in eastern China, extending to northernmost Vietnam in the south and to the Strait of Tartary region in the north; with an isolated population in north-western Mongolia. Absent from Hainan. Most pheasants introduced in North America are of this group. White neck ring varies from broad in the north east (P. c. pallasi) to absent in the south west (P. c. decollatus). Wing coverts tan to light grey (almost white in some). Chest copper red to light brown red, in P. c. decollatus rich purple red with thick black feather margins. Crown varying from dark green without orbital lines (P. c. decollatus) to light grey framed with white orbital lines. In P. c. hagenbecki chest feathers broadly fringed black.


P. c. formosanus group –
Taiwan pheasants:
P. c. formosanus
Taiwan White neck ring interrupted at front neck. Flank feathers characteristically whitish or pure white with black apices and often narrow black margins. Feathers at chest broadly fringed black, giving a scaly appearance.
Subspecies:[29][30]
P. c. pallasi
(Manchurian ring-necked pheasant)
Southeastern Siberia (Ussuriland, southern Amurland), adjacent northeastern North Korea (alpine region) to northeastern China (east and south slopes of Greater Khingan Mountains and Lesser Khingan Mountains) Plumage dominated by yellow and copper brown tones. Greyish green crown, framed by white orbital lines. White collar very wide and uninterrupted, often broader at the front.
P. c. karpowi
(Korean ring-necked pheasant)
Northeastern China (southern Heilongjiang, Jilin, northern Liaoning, northern Hebei) and central and southern Korea and Jeju Island in South Korea. Introduced on Hokkaido, Japan.[31] Darker and more richly coloured than P. c. pallasi, and white collar narrower.
P. c. elgans (Stone's pheasant) Eastern Tibet, Western Sichuan, and Northwestern Yunnan provinces, 1,500–3,000 m preferred elevation. Overall plumage dark and contrasting, but check to distinguish this subspecies from P. c. suehschanensis which has some range overlap. Scaplulars are scarcely spotted when compared to those of P. c. suehschanensis.
P. c. decollatus (Kweichow) Central China ( Eastern Szechuan, Western Hubei, Northeastern Yunnan and Guizhou). Appears like P. c. torquatus but with no collar
P. c. takatsukasae (Tonkinese) Southeastern China and Tonkin Poorly known, best identified by range. Supposedly similar to P. c. torquatus but overall darker.  
P. c. rothschildi (Rothschild's) Yunnan, Tonkin, northern Laos and eastern Myanmar. Prefers elevations of 1,500 to 3,000 m Similar to P. c. elegans but lighter. Best identified by range
P. c. torquatus (Chinese) Eastern China
P. c. formosanus (Taiwanese) Taiwan Black belly and pale sides. Range is also diagnostic.
P. c. alaschanicus (Alashan) North Central China, Southern Mongolia. "Oases near the western foothills of Ala-Shans". Poorly known, best identified by range.
P. c. hagenbecki (Kobdo) Kobdo Valley, Mongolia, prefers elevations of 1,000 to 1,500 m Distinctive bright golden flanks as well as small range are diagnostic.
P. c. kiangsuensis (Shansi) Northeastern China Extremely similar P. c. torquatus, range overlaps, but P. c. kiangsuensis skews further north. The barring on the nape in finer in P. c. kiangsuensis than in P. c. torquatus.
P. c. satscheuensis (Satchu) Northwestern Gansu Best identified by range
P. c. strauchi (Strauch's) Central China, Gansu south to Szechuan. Prefers altitudes near 3,000 m Extremely variable, best identified by range and elimination of other subspecies.
P. c. suehschanensis (Sungpan) Northwest Szechuan and Eastern Tibet Similar to elegans
P. c. vlangallii Quinghai, prefers elevations of 600 to 2,100 m Best identified by range
P. c. edzinensis Ruo Shui basin Similar plumage to P. c. satscheuensis, best identified by range.
P. c. sohokhotensis (Sohokhoto) Sohokhoto Oasis Resembles P. c. strauchi but paler with "eyebrows" and a collar.
P. c. tarimensis (Tarim basin) Southeastern Tarim Basin Olive-green rump
P. c. mongolicus (Mongolian/Kirghiz) Northern Kyrgyzstan, Eastern Kazakhstan, Xinjiang and Urumchi. Widespread in its range. Darkly plumaged with contrasting white wing coverts.
P. c turcestanicus (Syr-Darya) Syr Darya river valley Small range, darkly plumaged with contrasting white wing coverts, slightly brighter sides than P. c. mongolicus.
P. c. bianchii Southern Uzbekistan, southwestern Tajikistan and extreme northern Afghanistan Bright white wing coverts, also use range.
P. c. principalis (Prince of Wales) Southeastern Turkmenistan, extreme northern Iran and Afghanistan Rare, identification information poorly known other than range, look for the contrasting green and purple-maroon throat.
P. c. shawii (Yarkland) Xinjiang Bright white wing coverts
P. c. zerafschanicus (Zerafshan) Bukhara, Zeravshan and Kashkadarya Valleys of Southern Uzbekistan. Best identified by range
P. c. zarudnyi (Zarundy's) Central valleys of the river Amu Darya on the eastern Turkmenistan–Uzbekistan border. Best identified by range and glossy-green throat.
P. c. colchicus (Caucasian) Northeasternmost Turkey to eastern Georgia, eastern Azerbaijan, Dagestan, Armenia and northwestern Iran. The most widespread of the "black-necked pheasants". Commonly released as a gamebird. Possibly the ancestral population of the "old English pheasant"
P. c. septentrionalis (Northern Caucasian) Dagestan to north of the Volga Delta Large,  white spots on the back. Golden-orange nape that contrasts against the dark rump.
P. c. talischensis (Talisch) Transcaucasia and Caspian lowlands of Iran Fine, even white spots on the back, overall warm orange plumage, little contrast of wing plumage. Range important for identification.
P. c. persicus (Persian) Southwest Turkmenistan and northcentral Iran Overall warm orange plumage, wing plumage bright white and contrasting.

Within a maximum clade credibility mDNA gene tree, the most basal group is the P. c. elegans-group of the Eastern Clade, diverging from the green pheasant during the Calabrian, and diversifying in Middle Pleistocene around 0.7 million years ago, with the groups of the Western Clade splitting off from those of the Eastern Clade about 0.59 million years ago.[24] While the subspecies of the Western Clade are well geographically separated from each other, the subspecies of the Eastern Clade often show clinal variation and large areas of intergradation. For example, clines connect P. c. pallasi-karpowi-torquatus-takatsukasae within the P. c. torquatus group and P. c. kiangsuensis-alaschanicus-sohokhotensis-strauchi within the P. c. strauchi-vlangalii group, with the degree of expression of white collar and superciliary stripe in both cases decreasing from north to south. The isolated form P. c. hagenbecki is very close to P. c. pallasi in phenotype, and has been traditionally treated within the P. c. torquatus group until recently, when it was assigned in one study to the P. c. strauchi / P. c. vlangalii group.[24] However, the origin of the corresponding feather samples as listed in GenBank[32] is far away from the known distribution of subspecies P. c. hagenbecki, and the issue needs further clarification.

Ecology

[edit]
Just hatched, in an egg incubator

Common pheasants are native to Asia and parts of Europe, their original range extending from the eastern Black Sea and the Caspian Sea to Manchuria, Siberia, Korea, Mainland China, and Taiwan. The birds are found in woodland, farmland, scrub, and wetlands. In their natural habitat, common pheasants live in grassland near water with small copses of trees, and are tolerant of both dry and humid soils.[33][23] Extensively cleared farmland, however, is marginal habitat that cannot maintain self-sustaining populations for long.[34][35]

Common pheasants are gregarious birds and outside the breeding season form loose flocks. However, captive bred common pheasants can show strong sexual segregation, in space and time, with sex differences in the use of feeding stations throughout the day.[36] Wherever they are hunted they are always timid once they associate humans with danger, and will quickly retreat for safety after hearing the arrival of hunting parties in the area.[citation needed]

Chicks about one hour after hatching

While common pheasants are able short-distance fliers, they prefer to run. If startled however, they can suddenly burst upwards at great speed, with a distinctive "whirring" wing sound and often giving kok kok kok calls to alert conspecifics. Their flight speed is only 43–61 km/h (23–33 kn) when cruising but when chased they can fly up to 90 km/h (49 kn).

Nesting

[edit]

Common pheasants nest solely on the ground in scrapes, lined with some grass and leaves, frequently under dense cover or a hedge. Occasionally they will nest in a haystack, or old nest left by other bird. They roost in sheltered trees at night. The males are polygynous as is typical for many Phasianidae, and are often accompanied by a harem of several females.[37]

Breeding beings in April. Hens scrape a hollow in the ground lined with grass and dead leaves, in which they lay a clutch of eight to fifteen eggs. These are brown-olive in colour. The hen afterwards incubates them twenty-three to twenty-five days.[38] The chicks stay near the hen for several weeks, yet leave the nest when only a few hours old. After hatching they grow quickly, flying after 12–14 days, resembling adults by only 15 weeks of age.[citation needed]

They eat a wide variety of animal and vegetable type-food. Vegetable forage includes fruit, seeds, grain, mast, berries and leaves, while animal food includes a wide range of invertebrates, such as slugs, earthworms, leatherjackets, ant eggs, wireworms, caterpillars, grasshoppers and other insects.[38][10] Small vertebrates like lizards, field voles, small mammals and small birds are occasionally taken.[10]

European native

[edit]

Southern Caucasian pheasants (P. c. colchicus) were common in Greece during the classical period and it is a widespread myth that the Greeks took pheasants to the Balkans when they colonised Colchis in the Caucasus. This colonization happened during the 6th century BC, but pheasant archaeological remains in the Balkans are much older dating to 6th millennium BC. This fact indicates that probably pheasants reached the area naturally.[39][40] Additionally it seems that they had a continuous range in Turkey from the Sea of Marmara on the edge of the Balkans, across the northern shore of the country till Caucasus.[41] The last remnants of the Balkan population survive in the Kotza-Orman riparian forest of Nestos, in Greece with an estimated population of 100–200 adult birds.[42] In Bulgaria they were lost in the 1970s because they hybridised with introduced eastern subspecies.[43]

Besides the Balkans the species lives in Europe in the area north of Caucasus where the local subspecies P.c.septentrionalis survives pure around the lower reaches of the Samur River. Reintroduction efforts in the rest of the north Caucasian range may include hybrid birds.[44]

As an introduced species

[edit]
Although a non-indigenous species, the common pheasant is farmed even in conservation areas, as seen here in Litovelské Pomoraví Protected Landscape Area in the Czech Republic.
Introduced male and female foraging at the Newport Wetlands RSPB Nature Reserve in the United Kingdom
A startled male makes a dash for cover

Common pheasants can now be found across the globe due to their readiness to breed in captivity and the fact that they can naturalise in many climates, but are known to be introduced in Europe, North America, Japan and New Zealand. Pheasants were hunted in their natural range by Stone Age humans just like the grouse, partridges, junglefowls and perhaps peafowls that inhabited Europe at that time.[citation needed] The common pheasant was originally introduced to Europe during the Roman period. Recipes for preparing pheasant meat were discussed by Marcus Gavius Apicius in the first century AD; pheasant husbandry is also discussed by Columella in the same century and, based on the former's writings, by Rutilius Taurus Aemilianus Palladius in De Re Rustica in 350 AD.[38]

Introductions in the Southern Hemisphere have mostly failed, except where local Galliformes or their ecological equivalents are rare or absent.[citation needed]

The bird was naturalized in Great Britain around AD 1059, but may have been introduced by the Romano-British centuries earlier.[45] It was the Caucasian subspecies mistakenly known as the 'Old English pheasant' rather than the Chinese ring-necked pheasants (torquatus) that were introduced to Britain.[46] But it became extirpated from most of the isles in the early 17th century. There were further re-introductions of the 'white neck-ringed' variety in the 18th century. It was rediscovered as a game bird in the 1830s after being ignored for many years in an amalgam of forms. Since then it has been reared extensively by gamekeepers and was shot in season from 1 October to 31 January. Pheasants are well adapted to the British climate and breed naturally in the wild without human supervision in copses, heaths and commons.[citation needed] Imported stock has originated from a number of other subspecies in addition to colchicus and torquatus, including the Prince of Wales pheasant (P. c. principalis), the Mongolian pheasant (P. c. mongolicus), the Satchu pheasant (P. c. satscheuensis), and Pallas's pheasant (P. c. pallasi), alongside the related green pheasant. Extensive interbreeding has occurred between these stocks, so that most British pheasants are of mixed heritage and display an at least partial neck ring and the "Old English" type is not encountered in its original form. Common British phenotypes include a cream-colored variant termed the Bohemian pheasant and a melanistic form derived from green pheasant ancestry.[38][33]

The first mentions of pheasants in Scotland occur in the late sixteenth century, although they did not penetrate as far as the Scottish Highlands until the nineteenth, when a cock was recorded in the Grampian Mountains in 1826.[33] By 1950 pheasants bred throughout the British Isles, although they were scarce in Ireland. Because around 30,000,000 pheasants are released each year on shooting estates, mainly in the Midlands and South of England, it is widespread in distribution, although most released birds survive less than a year in the wild. The Bohemian was most likely seen in North Norfolk.[47] The Game & Wildlife Conservation Trust is researching the breeding success of reared pheasants and trying to find ways to improve this breeding success to reduce the demand to release as many reared pheasants and increase the wild population. As the original Caucasian stock all but disappeared during the Early Modern era, most 'dark-winged ringless' birds in the UK are actually descended from 'Chinese ring-necked' and 'green pheasant' hybrids,[48] which were commonly used for rewilding.[citation needed]

A close up of the head and body of a common pheasant

North America

[edit]

Common pheasants were introduced in North America beginning in 1773,[49] with the first large-scale successful introduction occurring in 1881 in the Williamette Valley of Oregon, followed by Washington in 1883 and California in 1889. Stocking of large pheasant populations in the plains and eastern states occurred in following decades after successful hunting seasons were recorded in the western states.[50] Pheasants have become well established throughout much of the Rocky Mountain states (Colorado, Idaho, Montana, Wyoming, etc.), the Midwest, the Plains states, as well as Canada and Mexico.[51][52] In the southwest, they can even be seen south of the Rockies in Bosque del Apache National Wildlife Refuge 161 km (100 mi) south of Albuquerque, New Mexico.[53][54] The largest populations of pheasants in the United States occur in a continuous belt over the Great Plains, the Corn Belt and the Wheat Belt, with extensions of its range reaching into southern Canada and the farmland areas of New England. Smaller populations occur in valleys and irrigated areas through the Intermountain West and the coast states, although these are separated by high mountain areas inhospitable to pheasants. Introductions failed in the more humid Southern states and in the American Southwest.[50]

Common pheasants have also been introduced to Hawaiian Islands, Chile, Uruguay, Peru, Argentina, Brazil, South Africa, New Zealand, and Australia, including the island state of Tasmania and small offshore islands such as Rottnest Island off Western Australia.[53][54]

Most common pheasants bagged in the United States are wild-born feral pheasants.[citation needed] In some states[55] captive-reared and released birds make up much of the population.[56]

Pheasant hunting is very popular in much of the US, especially in the Great Plains states, where a mix of farmland and native grasslands provides ideal habitat. South Dakota alone has an annual harvest of over 1 million birds a year by over 200,000 hunters.[57]

Negative impacts on other birds

[edit]

There are a number of negative effects of common pheasants on other game birds, including: nest parasitism, disease, aggression, and competition for resources.[58]  Nest parasitism, or brood parasitism, is common in pheasants because of their propensity to nest near other birds and the fact that nesting requirements are similar to those of other prairie birds and waterfowl that inhabit the same areas.  This phenomenon has been observed in grey partridges; prairie chickens; several types of duck, rail, grouse, turkeys, and others.[58]  Effects of nest parasitism may include abandonment of nests with a high proportion of foreign eggs, lower hatching rates, and lower numbers of eggs laid by the host species. Pheasant eggs also have a shorter incubation time than many of their nestmates, which may result in the individual watching over the nest to abandon her own eggs after the pheasants hatch, thinking that the remaining eggs are not viable.[58]  Pheasants raised in other species' nests often imprint on their caretaker, which may result in them adopting atypical behaviour for their species. This is sometimes the cause of hybridisation of species as pheasants adopt the mating behaviour of their nest's host species.[58]

Pheasants often compete with other native birds for resources. Studies have shown that they can lead to decreased populations of bobwhites and partridges due to habitat and food competition.[59] Insects are a valuable food source for both pheasants and partridges and competition may lead to decreased populations of partridges.[60] Pheasants may also introduce disease, such as blackhead, to native populations. While pheasants tolerate the infection well, other birds such as ruffed grouse, chukar, and grey partridge are highly susceptible.[61] Pheasants also have a tendency to harass or kill other birds. One study noted that in pheasant vs. prairie chicken interactions, the pheasants were victorious 78% of the time.[62]

Management strategies

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A variety of management strategies have been suggested for areas that are home to species that are particularly threatened by pheasants, such as the prairie chickens and grey partridge. These strategies include mowing grass to decrease the nesting cover preferred by pheasants, decreasing pheasant roosting habitat, shooting pheasants in organised hunts, trapping and removing them from areas where there are high concentrations of birds of threatened species, and others.[63]

Population change

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While pheasant populations are not in any danger, they have been decreasing in the United States over the last 30 years, largely in agricultural areas.[64] This is likely due to changes in farming practices, application of pesticides, habitat fragmentation, and increased predation due to changes in crops grown.  Many crops beneficial for pheasants (such as barley) are not being farmed as much in favour of using the land for more lucrative crops, such as nut trees.  Many of these new crops are detrimental to pheasant survival.[64] Pheasants prefer to nest in areas of significant herbaceous cover, such as perennial grasses, so many agricultural areas are not conducive to nesting anymore.[65] Pheasant hens also experience higher levels of predation in areas without patches of grassland.[66]

In the United Kingdom, about 50 million pheasants reared in captivity are now released each summer, a number which has significantly increased since the 1980s.[67] Most of these birds are shot during the open season (1 October to 1 February), and few survive for a year. The result is a wildly fluctuating population, from 50 million in July to less than 5 million in June.[68]

Relationship with humans

[edit]

The indigenous Paiwan people of Taiwan adorn motifs of the bird (tiativ in their language) on beams of their homes.[69] Pheasant feathers are worn by commoners including skilled hunters even as far as elected politicians among Paiwan commoners in modern times, in contrast to mountain hawk-eagle feathers reserved for hereditary chiefs (mamazangilan).[70]

As gamebirds

[edit]
For sale at Borough Market, London
Field line English Cocker Spaniel has brought in the quarry
Collisions between pheasants and road vehicles are common in the UK.[71]

Common pheasants are bred to be hunted and are shot in great numbers in Europe, especially the UK, where they are shot on the traditional formal "driven shoot" principles, whereby paying guns have birds driven over them by beaters, and on smaller "rough shoots". The open season in the UK is 1 October – 1 February, under the Game Act 1831 (1 & 2 Will. 4. c. 32). Generally they are shot by hunters employing gun dogs to help find, flush and retrieve shot birds. Retrievers, spaniels and pointing breeds are used to hunt pheasants.

The doggerel "Up gets a guinea, bang goes a penny-halfpenny, and down comes a half a crown" reflects the expensive sport of 19th century driven shoots in Britain,[72] when pheasants were often shot for sport, rather than as food. It was a popular royal pastime in Britain to shoot common pheasants. King George V shot over 1,000 pheasants out of a total bag of 3,937 over a six-day period in December 1913 during a competition with a friend; however, he did not do enough to beat him.[48]

Common pheasants are traditionally a target of small game poachers in the UK. The Roald Dahl novel Danny the Champion of the World featured a poacher (and his son) who lived in the UK and illegally hunted common pheasants.

Pheasant farming is a common practice and is frequently done intensively, with serious adverse impacts on native species.[73] Birds are supplied both to hunting preserves/estates and restaurants, with smaller numbers being available for home cooks.

The carcasses were often hung for a time to improve the meat by slight decomposition, as with most other game. Modern cookery generally uses moist roasting and farm-raised female birds.

See also

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References

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Grokipedia

from Grokipedia
The common pheasant (Phasianus colchicus), also known as the ring-necked pheasant, is a large, ground-dwelling bird belonging to the family Phasianidae, characterized by its striking sexual dimorphism and long, pointed tail. Males, or cocks, exhibit iridescent plumage with barred patterns of bright gold, copper-red, and green, a distinctive white ring around the neck, a bare red face and wattles, and a tail comprising over half their body length, measuring 70–90 cm overall and weighing 1.2–3 kg. Females, or hens, are smaller at 50–65 cm and around 0.8–1.2 kg, with cryptic buff-brown, mottled feathers for camouflage, shorter tails, and less vibrant head coloration.[1][2][3][4] Native to the temperate and subtropical regions of Asia—from the Russian Far East and southeastern Europe to Indochina and Afghanistan—the common pheasant has been introduced extensively since the 10th century, establishing feral populations across Europe, North America (from southern British Columbia to Texas and Nova Scotia), Australia, and Hawaii, where it thrives in diverse open habitats. There are over 30 recognized subspecies, varying in plumage and size, with genetic studies revealing clusters adapted to environments ranging from semideserts to montane forests. In its introduced ranges, it occupies agricultural farmlands, grasslands, wetland edges, shrublands, and woodland margins, preferring areas with dense cover for nesting and foraging within 1 km of food sources like grain fields.[5][6][7] Ecologically, the common pheasant is omnivorous, feeding primarily on seeds, grains, roots, and insects (especially beetles and ants for chicks), supplemented by green shoots and berries, which supports its role in seed dispersal but also leads to conflicts as an agricultural pest in some areas. It is polygynous, with breeding from March to July in temperate zones; hens lay 8–15 eggs in ground nests lined with grass, incubating for 23–28 days, and young are precocial, following the hen shortly after hatching. Known for explosive flight when flushed and a distinctive crowing call, the species is culturally significant as a game bird, hunted for sport and food worldwide, though populations fluctuate due to habitat loss and predation.[8][6]

Description

Morphology

The common pheasant (Phasianus colchicus) displays marked sexual dimorphism in morphology, with males generally larger and more ornate than females. Adult males measure 60–90 cm in total length, including a tail that can extend up to 50 cm, and weigh 1–3 kg. Adult females are smaller, measuring 50–65 cm in length and weighing 0.5–1.4 kg.[9][10][11] Male plumage is strikingly iridescent, featuring a glossy green head with red highlights, a bold white neck ring, prominent red facial wattles, and a long, pointed tail marked by dark bars; the body plumage includes shades of copper, gold, tan, and brown. Females exhibit cryptic, mottled brown plumage with buff undertones and a pale belly, facilitating camouflage on the ground. This dimorphism reflects adaptive roles, with male coloration enhancing visibility during territorial displays and mate attraction, while female plumage prioritizes concealment for nesting protection. Plumage brightness in males intensifies seasonally during the breeding period due to hormonal influences on feather sheen.[12][13][1] Juveniles hatch as downy chicks with buff-brown down accented by pale longitudinal stripes for early camouflage. They hatch covered in down and begin developing juvenile feathers shortly after hatching, achieving full juvenile plumage similar to adult females but with shorter tails and less patterning by around 6–8 weeks of age; males show initial crimson tinges on the face by 8 weeks. Full molt to adult-like plumage occurs by the first winter, with males developing iridescent features.[14][15][16] Males possess leg spurs that begin developing in the first year, initially as soft, blunt structures less than 1 cm long, which harden and elongate for use in aggressive encounters. Females lack spurs. Subspecies exhibit variations in plumage intensity, such as reduced white on the neck ring in some Asian forms.[11][17]

Vocalizations and Displays

The common pheasant (Phasianus colchicus) employs a variety of vocalizations and visual displays primarily for territorial defense, mate attraction, and predator avoidance. Males produce a characteristic crowing call, described as a loud, harsh, two-part sound consisting of a sharp "ko-ick" or "kweek" followed by a shrill, wavering "errr-ick" or "kerr-ick," which serves as an advertising signal to attract females and deter rival males.[18] This vocalization is most frequent during the breeding season, peaking from March to May in temperate regions, and is often delivered from elevated perches at dawn and dusk to maximize audibility across open habitats.[19] Accompanying the crow, males perform a wing-whirring display, rapidly flapping their wings to produce a distinctive rattling noise, which amplifies the territorial message and courtship appeal.[20] Alarm calls differ based on the threat type, with males and females issuing sharp, hoarse croaks such as a double squawk "ko-ork kok" or "korr-korr" in response to ground predators, alerting nearby individuals to danger.[7] For aerial threats, both sexes emit softer, high-pitched whistles or cackling notes while flushing, facilitating group escape.[19] Females contribute with a loud, repetitive clucking call during agitation or flight, which contrasts with their generally quieter demeanor outside of distress situations.[7] Courtship displays are elaborate and multimodal, integrating vocal, postural, and plumage elements to solicit mating. Males engage in tidbitting, a ritualistic behavior where they mimic offering food by picking up and dropping items while emitting a low, clucking call to draw females closer, often lowering their head and tilting it sideways.[20] This is followed by strutting and tail fanning, during which the male circles the female with his tail raised and ruff feathers spread, throwing his head back to showcase iridescent plumage—though the physical traits themselves are detailed elsewhere.[20] In response, receptive females may cluck softly to encourage copulation, while incubating females remain largely silent to avoid detection.[7] These displays intensify in spring, aligning with peak reproductive activity, and can involve aggressive posturing toward rivals, such as lateral displays with inflated air sacs and hissing sounds.[20]

Taxonomy and Systematics

Etymology and History

The genus name Phasianus derives from the ancient Greek term phasianós (φασιανός), originally referring to birds observed near the Phasis River (modern Rioni River) in Colchis, an ancient region in what is now Georgia.[21] The specific epithet colchicus is Latinized from kolchikós (Κολχικός), denoting origin from Colchis, reflecting early Greek associations of the bird with that Black Sea area.[22] This nomenclature underscores the pheasant's perceived homeland, tied to Greek legends such as the Argonauts' voyage where Jason reportedly encountered the bird along the Phasis.[23] The common pheasant was formally classified in modern taxonomy by Carl Linnaeus in the 10th edition of Systema Naturae (1758), where he named it Phasianus colchicus based on specimens and descriptions available to European naturalists.[24] Earlier historical records appear in ancient Greek literature, including Aristotle's History of Animals (circa 350 BCE), which describes the phasianós as a ground-dwelling bird with distinctive plumage and habits, likely drawing from accounts of Colchian imports. Romans further documented and disseminated the species, introducing it across Europe via trade routes from Asia Minor by the 1st century CE, valuing it as a delicacy for elite tables and aviaries.[4] In the 19th century, taxonomic debates arose over whether certain Asian forms, such as those with prominent white neck rings (often termed Phasianus torquatus), constituted a separate species from the nominate P. colchicus, due to plumage variations observed in introduced populations.[25] These distinctions were largely resolved by evidence of interbreeding among forms, confirming their conspecific status within a highly variable species.[26] Fossil records indicate that relatives of the Phasianidae family, to which the common pheasant belongs, originated and diversified in Asia during the Miocene epoch (approximately 23–5 million years ago), with early phasianid fossils from central Asian sites showing morphological traits akin to modern ground-dwelling galliforms.[27]

Subspecies

The common pheasant (Phasianus colchicus) is recognized as comprising 30 subspecies, traditionally grouped into five primary groups based on morphological characteristics: the western colchicus group (Caucasus pheasants), the principalis group (white-winged pheasants), the karpowi group (Tarim pheasants), the mongolicus group (Mongolian pheasants), and the torquatus group (Chinese pheasants).[28] These groupings reflect variations in plumage, size, and geographic distribution across Eurasia, with the colchicus group encompassing subspecies from the Caucasus to central Asia, the torquatus group from eastern China to Southeast Asia, and the mongolicus group from Mongolia to western China.[4] Notable examples include the nominate subspecies P. c. colchicus, native to the Caucasus region, where males exhibit a distinctive green crest and white neck ring.[28] In Japan, Phasianus versicolor (green pheasant, sometimes considered a subspecies of P. colchicus but generally treated as a separate species) is characterized by white wing patches in males and is adapted to forested and agricultural habitats.[4] The high-altitude subspecies P. c. karpowi, found in the Tibetan Plateau and surrounding highlands, shows adaptations such as denser feathering for cold environments and occurs at elevations up to 4,500 meters.[29] Hybridization occurs naturally in zones of overlap between subspecies groups, producing intermediate forms with blended plumage traits, such as partial white neck rings or variable tail lengths.[30] In introduced ranges, human activities like game bird releases have facilitated extensive interbreeding, leading to genetically mixed populations that obscure pure subspecies identities.[4] Recent taxonomic revisions, informed by DNA studies since 2000, have confirmed the species' origins in Asia during the Pleistocene and led to the synonymization of several names, reducing the total from earlier estimates of over 40 to the current 30 recognized subspecies.[30] These molecular analyses, using mitochondrial DNA, reveal eight distinct lineages that partially align with the traditional groups but highlight greater genetic diversity in central Asia.[31] A 2020 genetic study proposed splitting P. colchicus into three species—Yunnan pheasant (P. elegans), Turkestan pheasant (P. colchicus), and Chinese pheasant (P. torquatus)—based on these lineages, though this revision has not been widely adopted as of 2025.[32] Some island-endemic subspecies, such as P. c. formosanus in Taiwan, face vulnerability due to ongoing habitat loss from urbanization and agriculture, prompting localized conservation efforts despite the species' overall least concern status.[33]

Distribution and Habitat

Native Range

The common pheasant (Phasianus colchicus) is native to Asia, with its core range extending from the Black Sea region, including the Colchis area in the Caucasus and the Caspian Sea vicinity, eastward across central Asia through China, Korea, and into Japan.[7][33] This distribution spans temperate latitudes of the Palearctic, but the species is absent from dense rainforests, alpine forests, and extreme desert environments.[7] Subspecies distributions vary across this range, with forms like P. c. colchicus in the western Caucasus and P. c. karpowi in eastern Siberia.[33] Within its native habitat, the common pheasant prefers open grasslands, agricultural field edges, river valleys, and areas with scattered cover such as hedges, marshes, and stubble fields, which provide foraging opportunities and escape from predators.[7] It occurs from sea level up to elevations of approximately 3,000 m in the Himalayas, favoring landscapes that balance open ground for feeding with nearby shrubby or grassy cover for concealment.[34] The species adapts to temperate and subtropical climates, tolerating a range of conditions from mild winters in southern China to harsher continental weather in Siberia; in northern populations, individuals undertake short-distance migrations to lower altitudes during severe winters to access milder microclimates and food resources.[7][35] The native population is estimated at 50–100 million birds, remaining stable in core areas despite local declines.[33] Primary threats include habitat conversion through agricultural expansion, which fragments preferred open landscapes and reduces cover availability.[33] In its western range edges, the common pheasant co-occurs with other Phasianidae such as the black grouse (Tetrao tetrix), sharing grassland and edge habitats where indirect interactions like resource competition may occur.[36]

Introduced Ranges

The common pheasant (Phasianus colchicus) was first introduced to Europe during Roman times, likely originating from the Caucasus region, with subsequent introductions from various Asian sources occurring in the Middle Ages and the 19th century.[37] In Britain, these early releases by the Romans or Phoenicians were documented as early as the 1st century CE, though the species nearly became extinct by the 17th century before being re-established through Norman influences in the 11th century.[38] Introductions to North America began in the late 18th century by colonists, but widespread establishment occurred in the 1880s via organized releases from Asian stock, primarily for hunting purposes.[8] The species has been successfully introduced across temperate regions globally, becoming widespread in Europe (e.g., the UK and France, where over 40 million and 13 million birds are released annually, respectively), the central prairies of North America (with an estimated 14 million individuals), southeastern Australia (particularly Victoria and New South Wales), Hawaii, Chile, and New Zealand (population around 250,000).[39][4][40][41][36] Establishment has been driven by deliberate releases for sport hunting and occasional escapees from ornamental or farm collections, thriving in temperate farmlands and grasslands but often failing in tropical environments due to climatic incompatibility.[35][42] Genetic analyses of introduced populations reveal low overall diversity with strong geographic structuring, corresponding to major subspecies groups (colchicus, mongolicus, and torquatus), and limited admixture indicating multiple historical introduction events; in feral populations, hybrids between these groups predominate.[37] Today, introduced populations surpass native ones in regions like Europe and North America, though 2020s surveys indicate declines in unmanaged areas attributable to increased predation and habitat fragmentation.[43]

Ecology and Behavior

Diet and Foraging

The common pheasant (Phasianus colchicus) is omnivorous, with its diet consisting primarily of plant matter, comprising approximately 80–90% of intake for adults, including seeds, roots, berries (such as ivy), and cereals like wheat and barley.[44] Invertebrates make up the remaining 10–20%, such as beetles, worms, and other insects, which are particularly vital for providing protein during periods of growth or nutritional stress.[45] For newly hatched chicks, the diet shifts dramatically toward invertebrates, with insects accounting for up to 90% of consumption in the first weeks to support rapid development.[46] Dietary composition varies seasonally to meet energetic needs. In winter, pheasants rely heavily on grains and waste seeds from agricultural fields for high-energy sustenance, supplemented by roots and berries when available.[47] Spring foraging emphasizes protein-rich insects to rebuild body condition after winter, while summer diets incorporate more green shoots, leaves, and fresh vegetation alongside continued insect intake.[48] Foraging occurs almost exclusively on the ground, where pheasants scratch through soil, leaf litter, or snow using both feet and bill in short, vigorous bursts, often within dense cover for protection from predators.[7] They typically feed in the early morning and late afternoon, with activity patterns influenced by weather; cold or deep snow can limit access to buried food, prompting reliance on exposed sources.[45] During the non-breeding season, individuals often forage in loose groups, enhancing efficiency in locating scattered resources like seeds or insects.[43] Adult pheasants consume 100–150 g of food daily, divided into two main feeding periods, to maintain energy balance.[49] Chicks, with higher metabolic demands, ingest up to 30% of their body weight in food during the first few weeks, primarily insects for optimal growth.[50] In areas of high population density, such as introduced ranges with intensive agriculture, pheasants can cause notable crop damage by consuming sprouting grains and seeds, leading to management practices like supplemental feeding to mitigate losses.[51]

Reproduction and Nesting

The common pheasant exhibits a polygynous mating system, where males typically mate with 3 to 5 females during the breeding season, which spans March to June in the northern hemisphere.[7][11] Nesting occurs on the ground, with the female constructing a shallow scrape in dense grass or vegetation, often lining it with leaves, twigs, and feathers for camouflage.[52][7] The female's mottled brown plumage enhances concealment of the nest site, reducing predation risk during egg-laying and incubation.[7] Females lay 8 to 15 olive-brown eggs per clutch, averaging around 12, with one egg deposited every 1 to 2 days over 2 to 3 weeks.[45][2][49] Incubation, performed solely by the female, lasts 23 to 26 days and begins after the clutch is complete; during this period, the male provides no assistance.[45][11] Hatch success rates typically range from 40% to 60%, influenced by factors such as predation and weather, though females often renest up to 3 or 4 times if the initial attempt fails, producing smaller clutches in subsequent efforts.[53][11][49] Upon hatching, precocial chicks are mobile and follow the female, who leads the brood for 10 to 12 weeks while providing protection and guidance to foraging areas rich in insects.[11][2] Males offer no parental care after mating, leaving all brood-rearing responsibilities to the female.[7] Chick survival to adulthood is low, with approximately 30% reaching maturity due to high predation and environmental hazards; first-year mortality rates often exceed 50% to 70%.[2][49][7] Breeding typically begins at one year of age, contributing to the species' high reproductive output that offsets these losses.[45]

Population Dynamics

The global population of the common pheasant (Phasianus colchicus) is estimated at 160–220 million individuals, with substantial populations in native Asian ranges and introduced ranges across Europe and North America (the latter totaling 25-50 million and often including annual releases for hunting), while native populations in Asia remain stable but less precisely quantified.[35][33] Introduced populations exhibit greater fluctuations due to varying habitat availability and management practices, whereas native Asian stocks show relative stability owing to extensive natural ranges.[33] Key drivers of population growth include the species' high reproductive potential, with females capable of laying clutches of 8–15 eggs per nesting attempt and often renesting after failure, potentially yielding up to 30–40 eggs annually under optimal conditions, though realized recruitment varies regionally due to survival rates.[54] In managed hunting areas, supplemental feeding enhances winter survival and breeding densities, leading to localized increases in territorial males by up to 50% compared to unfed sites.[55] Population declines are primarily attributed to habitat loss from agricultural intensification, which reduces nesting cover and insect prey; increased predation by mammals like foxes and birds such as hawks; and pesticide use that diminishes invertebrate food sources for chicks.[56] For instance, in the UK, breeding populations increased by 18% from 1995 to 2023, though local declines occur due to these factors, with overall stability supported by releases.[57][58] Population modeling for common pheasants often employs Leslie matrices to project age-structured dynamics, incorporating stage-specific fecundity and survival rates to assess growth rates and sensitivity to vital rates like juvenile survival.[59] Density-dependent regulation occurs through male territoriality, where established cocks limit breeding access and space, constraining population expansion in high-density areas.[55] Monitoring relies on annual hunting bag records as proxies for abundance, with datasets like the UK's National Gamebag Census tracking harvest trends to infer population changes over decades.[60] Additional methods include roadside brood surveys and crowing counts to index breeding densities seasonally.[61]

Human Interactions

As Game Birds

The common pheasant has long been prized as a game bird in Europe, with hunting practices dating back to the bird's introduction by the Romans and gaining prominence as a noble pursuit from the 16th century onward in Britain, where it was initially taken using falconry and nets.[62] By the 19th century, driven shoots emerged as a formalized method, involving teams of beaters to flush coveys of pheasants toward lines of guns positioned at strategic points, a tradition that emphasized skill, camaraderie, and the spectacle of high-flying birds.[63] This style of hunting, rooted in aristocratic estates, transformed pheasants from a supplementary quarry to a central element of organized sport, particularly in the UK where elaborate shoots could involve hundreds of birds per day.[64] In modern times, pheasant hunting relies heavily on annual releases of farm-reared birds to supplement wild populations and ensure abundant shooting opportunities during the season, which runs from October 1 to February 1 in the UK and typically from November to January in many US states.[65] Approximately 35–46 million pheasants are released each year in the UK, with around 9–10 million in the US, primarily raised from eggs in controlled facilities and reared in flight pens before release onto shooting grounds.[66][67] Bag limits, such as two to three birds per gun per day in the UK, help sustain stocks and promote ethical harvesting, though actual harvests account for only about 25–40% of released birds, with the remainder surviving or succumbing to natural causes.[68] The pheasant shooting industry generates substantial economic value, contributing to rural economies through jobs in rearing, habitat management, and guiding; in the UK, game shooting—including pheasants as the dominant species—adds £3.3 billion annually to gross value added and supports over 67,000 full-time equivalent jobs (as of 2024).[69] In the US, pheasant-related activities on hunting preserves and farms generate more than $500 million in wages yearly, bolstering nearly 12,000 jobs and stimulating local spending on lodging, equipment, and services.[70] Globally, the practice underscores a multi-billion-dollar segment of the hunting economy, with farm-reared pheasants forming the backbone of commercial operations from breeding to organized hunts.[71] Culturally, the pheasant holds symbolic importance in European traditions, notably featured in the 1454 Feast of the Pheasant hosted by Philip the Good, Duke of Burgundy, where knights swore chivalric vows on a roasted pheasant to support a crusade against the Turks, echoing the ceremonial oaths of orders like the Garter and highlighting the bird's association with nobility and honor.[72] In heraldry, the pheasant appears as an emblem of beauty, good fortune, and refinement, often depicted in coats of arms to signify grace and abundance.[73] The opening of the pheasant shooting season on October 1 marks a key event in the British countryside calendar, celebrated through communal shoots that foster social bonds among participants.[74] Ethical debates surrounding pheasant hunting center on animal welfare issues in intensive rearing practices, where birds are often kept in high-density pens leading to stress and disease, though pre-release mortality is typically low (<5%), with significant post-release losses (up to 25% before the shooting season) due to predation and poor adaptation.[68] Critics argue that released pen-reared pheasants suffer from poor flight abilities and vulnerability to predators, prompting some estates and hunters to shift toward wild bird management to prioritize natural behaviors and reduce reliance on artificial stocking.[75] Proponents counter that regulated hunting provides quick, humane kills compared to prolonged suffering in the wild, while also funding conservation, though ongoing discussions emphasize improving rearing standards to address these concerns.[76]

Ecological Impacts and Management

As an introduced species, the common pheasant exerts several negative ecological impacts in non-native habitats. It competes with indigenous galliform birds for food and nesting resources, potentially reducing breeding success; for instance, in the Pacific Northwest of the United States, it poses a risk of competition for nesting and wintering sites with the sharp-tailed grouse (Tympanuchus phasianellus).[77] Additionally, in regions like Hawaii, where the species was introduced, pheasants and other non-native birds act as reservoirs that facilitate the transmission of avian malaria (Plasmodium relictum) to susceptible endemic species, exacerbating population declines among native forest birds.[78] Foraging activities further contribute to environmental disruption by causing soil disturbance, which alters soil chemistry, increases erosion, and promotes bare ground in woodlands and grasslands used for releases.[79] Despite these drawbacks, the common pheasant plays positive roles in some ecosystems. Through its consumption and subsequent defecation of seeds, it aids in the dispersal and germination of native and non-native plants, particularly in grassland habitats where it helps regenerate vegetation cover.[4] Furthermore, as a abundant food source, it supports predator populations, serving as prey for raptors such as eagles and other avian and mammalian carnivores, thereby bolstering trophic dynamics in introduced ranges.[7] Management strategies focus on balancing these impacts while sustaining populations, often through habitat enhancement techniques like establishing hedgerows for cover and planting cover crops to improve foraging and nesting conditions.[80] Predator control programs, targeting species like foxes and raptors, are implemented in agricultural landscapes to reduce mortality rates. In ecologically sensitive areas, targeted culling helps control densities and minimize competition with natives, though such efforts are more commonly applied to overabundant game birds in localized contexts. The species holds a global conservation status of Least Concern according to the IUCN Red List, reflecting its widespread distribution and stable populations (assessed in 2016; unchanged as of 2025).[81] Within its native Caucasus range, it benefits from regional protections, including breeding and release programs in areas like Georgia's Vashlovani Protected Areas to bolster local stocks.[82] Looking ahead, challenges include range shifts driven by climate change, which models predict will reduce suitable habitat in parts of its current distribution due to altered temperature and precipitation patterns.[83] Genetic dilution from interbreeding with farm-reared individuals also threatens wild population fitness, as repeated releases introduce less adapted genes that lower survival and reproductive vigor.[84]

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