Heermann's Gull vs Forster's Tern
Larus heermanni 对比 Sterna forsteri
Side-by-Side Comparison
| 属性 | Heermann's Gull | Forster's Tern |
|---|---|---|
| 学名 | Larus heermanni | Sterna forsteri |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Near Threatened | Least Concern |
| 体长 | — | — |
| 翼展 | 67.2 cm (26.5 in) | 50.5 cm (19.9 in) |
| 体重 | 448.26666666666665 g (15.81 oz) | 151.25 g (5.34 oz) |
| 食性 | -- | -- |
| 产卵数 | 1-2 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Near Threatened
Heermann's Gull
Least Concern
Forster's Tern
About These Birds
Heermann's Gull
赫尔曼鸥在加利福尼亚海岸和下加利福尼亚半岛岛屿繁殖，以暗色体色和红色嘴为特征。
Forster's Tern
Forster's Tern, 33–36 cm, breeds in interior North American marshes and winters along both US coasts and into Mexico. Distinctive frosted silver upperparts and orange-based bill. In non-breeding plumage, shows a black eye-mask. Piscivore; hovers and plunge-dives in coastal bays and lagoons.