Short-billed Gull vs Aleutian Tern
Larus brachyrhynchus 比較対象 Onychoprion aleuticus
Side-by-Side Comparison
| 属性 | Short-billed Gull | Aleutian Tern |
|---|---|---|
| 学名 | Larus brachyrhynchus | Onychoprion aleuticus |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保全状況 | Not Evaluated | Vulnerable |
| 体長 | — | — |
| 翼開長 | — | 52.4 cm (20.6 in) |
| 体重 | 395.0 g (13.93 oz) | 104.88 g (3.70 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 1-5 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Not Evaluated
Short-billed Gull
Vulnerable
Aleutian Tern
About These Birds
Short-billed Gull
Short-billed Gull, 40–45 cm, breeds in interior Alaska and western Canada, wintering on the Pacific coast. Recently split from Common Gull; slightly smaller with a shorter bill and more rounded head. Omnivore; often inland on grasslands and agricultural fields during migration. Migratory.
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.