How do the markings of the yellow-eyed penguin differ from the Southern Rockhopper penguin?

Answer

The Hoiho has an enveloping yellow ring around the eye, not crests

The yellow-eyed penguin is separated from species like the Southern Rockhopper penguin because the latter possesses dramatic crests of yellow and black feathers above the eye rather than an enveloping ring.

How do the markings of the yellow-eyed penguin differ from the Southern Rockhopper penguin?

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Yellow Eyed Penguin: the RAREST PENGUIN?! Animal Fact Files

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