Aleutian Tern vs Saunders's Tern
Onychoprion aleuticus 比較対象 Sternula saundersi
Side-by-Side Comparison
| 属性 | Aleutian Tern | Saunders's Tern |
|---|---|---|
| 学名 | Onychoprion aleuticus | Sternula saundersi |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | — | — |
| 翼開長 | 52.4 cm (20.6 in) | 33.6 cm (13.2 in) |
| 体重 | 104.88 g (3.70 oz) | 41.825 g (1.48 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 1-4 | 2 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Vulnerable
Aleutian Tern
Least Concern
Saunders's 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.
Saunders's Tern
Saunders's Tern, 22–24 cm, is a small coastal tern of the Red Sea, Persian Gulf, and Indian Ocean coasts. Very similar to Little Tern; separated by darker outer primaries and slightly smaller size. Piscivore; hovers and dives in shallow coastal waters and tidal mudflats.