Black Guillemot vs Japanese Murrelet
Cepphus grylle compared with Synthliboramphus wumizusume
Side-by-Side Comparison
| Attribute | Black Guillemot | Japanese Murrelet |
|---|---|---|
| Scientific Name | Cepphus grylle | Synthliboramphus wumizusume |
| Order | Charadriiformes | Charadriiformes |
| Family | Alcidae | Alcidae |
| Conservation Status | Least Concern | Vulnerable |
| Length | — | — |
| Wingspan | 30.8 cm (12.1 in) | 24.0 cm (9.4 in) |
| Weight | 421.8666666666666 g (14.88 oz) | 171.6 g (6.05 oz) |
| Diet | -- | -- |
| Clutch Size | 1-2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Black Guillemot
Vulnerable
Japanese Murrelet
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.
Japanese Murrelet
Japanese Murrelet, 26–28 cm, is a Vulnerable alcid endemic to Japan, breeding on rocky islets in the Pacific. Black head with a small white supercilium stripe; grey back. Nests in rock crevices; chicks led to sea while still tiny. Piscivore; threatened by gill-net bycatch and feral predators on islands.