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The "Great Auk, Northern Penguin, or Gair-Fowl", wood engraving by Thomas Bewick in A History of British Birds, 1804 [a] The great auk was one of the 4,400 animal species formally described by Carl Linnaeus in his eighteenth-century work Systema Naturae, in which it was given the binomial Alca impennis. [15]
Auks are pelagic birds, spending the majority of their adult lives on the open sea and going ashore only for breeding, although some species, such as the common guillemot, spend a great part of the year defending their nesting spot from others. Auks are monogamous, and tend to form lifelong pairs.
The great auk of the Northern Hemisphere, now extinct, was superficially similar to penguins, and the word penguin was originally used for that bird centuries ago. They are only distantly related to the penguins, but are an example of convergent evolution. [59]
During summer, great auk plumage showed a white patch over each eye. During winter, the great auk lost these patches, instead developing a white band stretching between the eyes. The wings were only 15 cm (6 in) long, rendering the bird flightless. Instead, the great auk was a powerful swimmer, a trait that it used in hunting.
These birds stand anywhere from 3.5 to 4.3 feet and can weigh anywhere from 50-90 pounds. You can tell them apart from other penguins by their distinct black and white plumage.
It is the closest living relative of the extinct great auk (Pinguinus impennis). [4] Historically, it has also been known as "auk", [5] "razor-billed auk" [6] and "lesser auk". [7] Razorbills are primarily black with a white underside. The male and female are identical in plumage; however, males are generally larger than females.
The bird was also referred to as a “European penguin,” likely a nickname based on its similar appearance to actual penguins. Auks vary in size, growing between 6 to 16 inches, according to ...
The Great Auk, in Welsh pen gwyn, 'white head' (referring to the prominent white patch on the head which distinguishes it from other auks), was the original bird to which the name "penguin" applied; this use was first recorded in 1536 in respect of islands off Newfoundland.