Least Auklet vs Black Guillemot
Aethia pusilla compared with Cepphus grylle
Side-by-Side Comparison
| Attribute | Least Auklet | Black Guillemot |
|---|---|---|
| Scientific Name | Aethia pusilla | Cepphus grylle |
| Order | Charadriiformes | Charadriiformes |
| Family | Alcidae | Alcidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 18.9 cm (7.4 in) | 30.8 cm (12.1 in) |
| Weight | 84.33333333333333 g (2.97 oz) | 421.8666666666666 g (14.88 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Least Auklet
Least Concern
Black 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.
Black Guillemot
Black Guillemot, 30–32 cm, is a compact North Atlantic alcid, distinctive in summer: entirely black with bold white wing patches and vivid red feet. Resident on rocky Arctic and boreal shores year-round; does not undertake long pelagic migrations. Dives to 50 m for blennies and sand eels near shore.