Heermann's Gull vs Grey-backed Tern
Larus heermanni 比較対象 Onychoprion lunatus
Side-by-Side Comparison
| 属性 | Heermann's Gull | Grey-backed Tern |
|---|---|---|
| 学名 | Larus heermanni | Onychoprion lunatus |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保全状況 | Near Threatened | Least Concern |
| 体長 | — | — |
| 翼開長 | 67.2 cm (26.5 in) | 52.2 cm (20.6 in) |
| 体重 | 448.26666666666665 g (15.81 oz) | 126.21666666666665 g (4.45 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 1-2 | 1 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Near Threatened
Heermann's Gull
Least Concern
Grey-backed Tern
About These Birds
Heermann's Gull
ヒアマンカモメはカリフォルニア沿岸と下バハ・カリフォルニアの島々に繁殖し、暗色の体と赤い嘴が特徴的なカモメである。
Grey-backed Tern
Grey-backed Tern, 35–37 cm, is a Pacific seabird breeding on islands from Hawaii to Micronesia and Polynesia. Pale grey back distinguishes it from the similar Bridled Tern; white below with black cap. Piscivore; surface-dips and shallow plunge-dives. Largely pelagic when not breeding.