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Side-by-Side Comparison

Attribute	Spectacled Guillemot	Great Auk
Scientific Name	Cepphus carbo	Pinguinus impennis
Order	Charadriiformes	Charadriiformes
Family	Alcidae	Alcidae
Conservation Status	Least Concern	Extinct
Length	—	—
Wingspan	38.4 cm (15.1 in)	—
Weight	480.0 g (16.93 oz)	4750.0 g (167.55 oz)
Diet	--	--
Clutch Size	1-2	1
Population Trend	—	—

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Habitat Comparison

Shared Habitats

🏖️ Coastal

Spectacled Guillemot only

None

Great Auk only

None

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Conservation Status

Least Concern

Spectacled Guillemot

Extinct

Great Auk

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About These Birds

Spectacled Guillemot

Spectacled Guillemot, 36–38 cm, breeds on rocky coasts and sea cliffs of the western North Pacific from Kamchatka to Japan. Sooty black with white spectacle patches around the eye; red feet. Coastal diver; feeds on fish and crustaceans near rocky reefs. Sedentary; stays close to breeding coast year-round.

Great Auk

Great Auk was the Northern Hemisphere's giant flightless auk, 75–85 cm, hunted to extinction in 1844. The last pair was killed on Eldey Island, Iceland. Black above, white below with a white oval eye patch; vestigial wings. Spent most of its life at sea; bred colonially on Atlantic islands and rocks.

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