Least Auklet vs Spectacled Guillemot

Aethia pusilla compared with Cepphus carbo

Side-by-Side Comparison

Attribute Least Auklet Spectacled Guillemot
Scientific Name Aethia pusilla Cepphus carbo
Order Charadriiformes Charadriiformes
Family Alcidae Alcidae
Conservation Status Least Concern Least Concern
Length
Wingspan 18.9 cm (7.4 in) 38.4 cm (15.1 in)
Weight 84.33333333333333 g (2.97 oz) 480.0 g (16.93 oz)
Diet -- --
Clutch Size 1 1-2
Population Trend

Habitat Comparison

Shared Habitats

Least Auklet only

None

Spectacled Guillemot only

None

Conservation Status

Least Concern

Least Auklet

Least Concern

Spectacled Guillemot

About These Birds

Least Auklet

Least Auklet, 15–16 cm, is the smallest auk, breeding in immense colonies (millions) on rocky Aleutian and Bering Sea islands. Dark above, streaked white below; a tiny white plume above the eye. Planktivore; sieves copepods and euphausiids at sea. Makes loud buzzing display choruses at colony.

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.

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