Aleutian Tern vs Least Tern
Onychoprion aleuticus مقارنةً بـ Sternula antillarum
Side-by-Side Comparison
| السمة | Aleutian Tern | Least Tern |
|---|---|---|
| الاسم العلمي | Onychoprion aleuticus | Sternula antillarum |
| الرتبة | Charadriiformes | Charadriiformes |
| الفصيلة | Laridae | Laridae |
| حالة الحفاظ | Vulnerable | Least Concern |
| الطول | — | — |
| طول الجناح | 52,4 cm (20.6 in) | 33,0 cm (13.0 in) |
| الوزن | 104,88 g (3.70 oz) | 46,75 g (1.65 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1-4 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Vulnerable
Aleutian Tern
Least Concern
Least Tern
About These Birds
Aleutian Tern
Aleutian Tern, 32–34 cm, breeds colonially in Alaska and Russian Far East, wintering in Southeast Asian waters — one of the most poorly tracked migrations among seabirds. Dark grey above, white below, black cap with white forehead. Piscivore; dives for small fish. Near Threatened.
Least Tern
Least Tern is North America's smallest tern, 22–24 cm, breeding on sandy beaches and river sandbars from the Atlantic coast to the interior. Endangered (interior subspecies). Yellow bill, white forehead, grey upperparts. Hovers and plunge-dives for small fish in coastal and riverine habitats.