Heermann's Gull vs Black-bellied Tern
Larus heermanni 对比 Sterna acuticauda
Side-by-Side Comparison
| 属性 | Heermann's Gull | Black-bellied Tern |
|---|---|---|
| 学名 | Larus heermanni | Sterna acuticauda |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Near Threatened | Endangered |
| 体长 | — | — |
| 翼展 | 67.2 cm (26.5 in) | 44.8 cm (17.6 in) |
| 体重 | 448.26666666666665 g (15.81 oz) | 159.5 g (5.63 oz) |
| 食性 | -- | -- |
| 产卵数 | 1-2 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Near Threatened
Heermann's Gull
Endangered
Black-bellied 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。
Black-bellied Tern
Black-bellied Tern, 32–34 cm, is an Endangered freshwater tern of the Indian subcontinent, breeding on large river sandbars from Pakistan to Myanmar. Black belly contrasts with grey upperparts in breeding plumage; orange bill. Plunge-dives for small fish. Severely threatened by river modification.