Black-fronted Tern vs Aleutian Tern
Chlidonias albostriatus 比較対象 Onychoprion aleuticus
Side-by-Side Comparison
| 属性 | Black-fronted Tern | Aleutian Tern |
|---|---|---|
| 学名 | Chlidonias albostriatus | Onychoprion aleuticus |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保全状況 | Endangered | Vulnerable |
| 体長 | — | — |
| 翼開長 | 47.9 cm (18.9 in) | 52.4 cm (20.6 in) |
| 体重 | 93.0 g (3.28 oz) | 104.88 g (3.70 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 2 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Endangered
Black-fronted Tern
Vulnerable
Aleutian Tern
About These Birds
Black-fronted Tern
クロビタイアジサシ、27〜30 cm。ニュージーランド南島固有の準絶滅危惧種で、砂利河床で繁殖。橙色の嘴・青灰色の体・黒い頭頂；幼鳥は褐色。魚食性および昆虫食性。
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.