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Fieldfare

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Fieldfare

The fieldfare (Turdus pilaris) is a member of the thrush family Turdidae. It breeds in woodland and scrub in northern Europe and across the Palearctic. It is strongly migratory, with many northern birds moving south during the winter. It is a very rare breeder in the British Isles, but winters in large numbers in the United Kingdom, Southern Europe, North Africa and the Middle East. It is omnivorous, eating a wide range of molluscs, insects and earthworms in the summer, and berries, grain and seeds in the winter.

Fieldfares often nest in small colonies, possibly for protection from predators. The nest is built in a tree where five or six eggs are laid. The chicks are fed by both parents and leave the nest after a fortnight (a period of two weeks). There may be two broods in southern parts of the range but only one further north. Migrating birds and wintering birds often form large flocks, often in the company of redwings.

The fieldfare is 25 cm (10 in) long, with a grey crown, neck and rump, a plain brown back, dark wings and tail and white underwings. The breast and flanks are heavily spotted. The breast has a reddish wash and the rest of the underparts are white. The sexes are similar in appearance but the females are slightly more brown. The male has a simple chattering song and the birds have various guttural flight and alarm calls.

Nearly 90 species of medium to large thrushes are in the genus Turdus, characterised by rounded heads, longish, pointed wings, and usually melodious songs. Although two European thrushes, the song thrush and mistle thrush, are early offshoots from the Eurasian lineage of Turdus thrushes after they spread north from Africa, the fieldfare is descended from ancestors that had colonised the Caribbean islands from Africa and subsequently reached Europe from there.

The fieldfare was described by the Swedish naturalist Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae under its current scientific name. Linnaeus specified the type locality as Europe but this was restricted to Sweden by the German ornithologist Ernst Hartert in 1910. The name Turdus pilaris comes from two separate Latin words for 'thrush'. No subspecies are recognised.

The English common name fieldfare dates back to at least the 11th century. The Old English word feldefare perhaps meant 'traveller through the fields', but it has also been suggested it may derive from Old English fealu fearh, 'grey piglet', related to an old Welsh name for the species socen lwyd with the same meaning.

The fieldfare is easily recognisable with its slate-grey head, nape and rump, dark brown back, blackish tail and boldly speckled breast. In flight, its white under wing-coverts and axillaries are conspicuous. The harsh flight call "tsak tsak" is also distinctive.

The forehead and crown of the male are bluish-grey and each feather has a central brownish-black band. The lores and under-eye regions are black and there are faint, pale streaks above the eyes. The ear-coverts, nape, hind neck and rump are bluish-grey, usually with a white streak near the shaft of each rump feather. The scapulars and mantle feathers are dark chestnut-brown with dark central streaks and pale tips. There are fourteen tail feathers each with a pointed tip, the outer two slightly shorter than the others giving a rounded tail. They are brownish-black, with inconspicuous darker bars visible in some lights. The outer edge of each tail feather is fringed with grey near the base and the outer pair of feathers have a narrow white border on the inner edge. The chin, throat and upper breast are creamy-buff with bold streaks and speckles of brownish-black. The lower breast is creamy-white with a diminishing buff tinge and fewer speckles and the belly is similarly creamy-white, with the speckles restricted to the uppermost parts. The primaries are brownish-black with the leading edge fringed grey and the inner edge of the outer feathers grey near the base whereas the inner feathers are fringed with brown near the base. The secondaries are similar but fringed with chestnut-brown on the leading edge. The upper wing-coverts are brownish-black and similar to the outer primaries in their margin colouration. The axillaries and under wing-coverts are white and the under tail-coverts have dark greyish-brown bases and margins and white centres and tips. The beak is strong, with a slight curve and a notch near the tip. It is orange-yellow in winter, with the upper mandible somewhat brownish and both mandible tips brownish-black. In the summer both mandibles of the male's beak are yellow. The irises are dark brown and the legs and feet are brown. The average adult length is 25 cm (9.8 in), the winglength is 14.5 cm (5.7 in) and the tarsal length 3.5 cm (1.4 in). Wingspan ranges from 39 to 42 cm and weight ranges from 80 to 140 g.

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