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Crested penguin
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Crested penguin
Eudyptes (from Ancient Greek εὖ (eû), meaning "true, well", and δύπτης (dúptes), meaning "diver", and thus, "true diver") is a genus of penguins whose members are collectively called crested penguins. The exact number of species in the genus varies between four and eight depending on the authority, and a Chatham Islands species became extinct in recent centuries. All are black and white penguins with yellow crests, red bills and eyes, and are found on Subantarctic islands in the world's southern oceans. All lay two eggs, but raise only one young per breeding season; the first egg laid is substantially smaller than the second.
The genus Eudyptes was introduced by the French ornithologist Louis Pierre Vieillot in 1816; the name is derived from the Ancient Greek words eu meaning "fine", and dyptes meaning "diver". The type species was designated as the western rockhopper penguin by George Robert Gray in 1840.
The genus contains eight exant species:
Also a fossil species:
Eudyptes warhami is known only from subfossil bones, and became extinct shortly following human colonisation of the Chatham Islands. This genetically-distinct species was relatively large, with a thin, slim and low bill.
Mitochondrial and nuclear DNA evidence suggests that the crested penguins split from the ancestors of their closest living relative, the yellow-eyed penguin, in the mid-Miocene around 15 million years ago, before splitting into separate species around 8 million years ago in the late Miocene.
A fossil penguin genus, Madrynornis, has been identified as the closest known relative of the crested penguins. Found in late Miocene deposits dated to about 10 million years ago, it must have separated from the crested penguins around 12 million years ago. Given that the head ornamentation by yellow filoplumes seems plesiomorphic for the Eudyptes-Megadyptes lineage, Madrynornis probably had them too.[citation needed]
The crested penguins are all similar in appearance, having sharply delineated black and white plumage with red beaks and prominent yellow crests. Their calls are more complex than those of other species, with several phrases of differing lengths. The royal penguin (mostly) has a white face, while other species have black faces.
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Crested penguin
Eudyptes (from Ancient Greek εὖ (eû), meaning "true, well", and δύπτης (dúptes), meaning "diver", and thus, "true diver") is a genus of penguins whose members are collectively called crested penguins. The exact number of species in the genus varies between four and eight depending on the authority, and a Chatham Islands species became extinct in recent centuries. All are black and white penguins with yellow crests, red bills and eyes, and are found on Subantarctic islands in the world's southern oceans. All lay two eggs, but raise only one young per breeding season; the first egg laid is substantially smaller than the second.
The genus Eudyptes was introduced by the French ornithologist Louis Pierre Vieillot in 1816; the name is derived from the Ancient Greek words eu meaning "fine", and dyptes meaning "diver". The type species was designated as the western rockhopper penguin by George Robert Gray in 1840.
The genus contains eight exant species:
Also a fossil species:
Eudyptes warhami is known only from subfossil bones, and became extinct shortly following human colonisation of the Chatham Islands. This genetically-distinct species was relatively large, with a thin, slim and low bill.
Mitochondrial and nuclear DNA evidence suggests that the crested penguins split from the ancestors of their closest living relative, the yellow-eyed penguin, in the mid-Miocene around 15 million years ago, before splitting into separate species around 8 million years ago in the late Miocene.
A fossil penguin genus, Madrynornis, has been identified as the closest known relative of the crested penguins. Found in late Miocene deposits dated to about 10 million years ago, it must have separated from the crested penguins around 12 million years ago. Given that the head ornamentation by yellow filoplumes seems plesiomorphic for the Eudyptes-Megadyptes lineage, Madrynornis probably had them too.[citation needed]
The crested penguins are all similar in appearance, having sharply delineated black and white plumage with red beaks and prominent yellow crests. Their calls are more complex than those of other species, with several phrases of differing lengths. The royal penguin (mostly) has a white face, while other species have black faces.
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