Razorbill vs Black Guillemot
Alca torda مقارنةً بـ Cepphus grylle
Side-by-Side Comparison
| السمة | Razorbill | Black Guillemot |
|---|---|---|
| الاسم العلمي | Alca torda | Cepphus grylle |
| الرتبة | Charadriiformes | Charadriiformes |
| الفصيلة | Alcidae | Alcidae |
| حالة الحفاظ | Least Concern | Least Concern |
| الطول | — | — |
| طول الجناح | 41,9 cm (16.5 in) | 30,8 cm (12.1 in) |
| الوزن | 646,6666666666666 g (22.81 oz) | 421,8666666666666 g (14.88 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Least Concern
Razorbill
Least Concern
Black Guillemot
About These Birds
Razorbill
Razorbill, 37–39 cm, is an Atlantic alcid with a deep, laterally compressed bill crossed by a white vertical bar. Breeds on Atlantic cliff colonies from Maine to Greenland and Iceland to Norway; winters at sea. Dives to over 100 m pursuing fish. Strongly monogamous; pairs reunite annually at colonies.
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.