All about alcids: Extravagant divers of northern oceans
10,000 Birds
AUGUST 10, 2014
Together, these birds compose the family Alcidae , and they share adaptations that we recognize as penguin-like: an upright stance on land, black-and-white plumage, and — most important — wings that propel them underwater in pursuit of prey ( see them in action here ). © David J. See Cairns et al.
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