Black Guillemot vs Thick-billed Murre
Cepphus grylle compared with Uria lomvia
Side-by-Side Comparison
| Attribute | Black Guillemot | Thick-billed Murre |
|---|---|---|
| Scientific Name | Cepphus grylle | Uria lomvia |
| Order | Charadriiformes | Charadriiformes |
| Family | Alcidae | Alcidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 30.8 cm (12.1 in) | 41.4 cm (16.3 in) |
| Weight | 421.8666666666666 g (14.88 oz) | 945.75 g (33.36 oz) |
| Diet | -- | -- |
| Clutch Size | 1-2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Black Guillemot
Least Concern
Thick-billed Murre
About These Birds
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.
Thick-billed Murre
Thick-billed Murre (Brünnich's Guillemot), 39–43 cm, breeds in enormous cliff colonies across the Arctic from Newfoundland to Siberia. Thicker, shorter bill with white gape line. Dives to 200+ m — deepest diver among alcids. Piscivore; takes capelin, cod. Vulnerable to climate change in the High Arctic.