Aleutian Tern vs Saunders's Gull
Onychoprion aleuticus в сравнении с Saundersilarus saundersi
Side-by-Side Comparison
| Характеристика | Aleutian Tern | Saunders's Gull |
|---|---|---|
| Научное название | Onychoprion aleuticus | Saundersilarus saundersi |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Vulnerable | Vulnerable |
| Длина | — | — |
| Размах крыльев | 52,4 cm (20.6 in) | 54,8 cm (21.6 in) |
| Масса | 104,88 g (3.70 oz) | 195,0 g (6.88 oz) |
| Питание | -- | -- |
| Размер кладки | 1-4 | 1-6 |
| Population Trend | — | — |
Habitat Comparison
Охранный статус
Vulnerable
Aleutian Tern
Vulnerable
Saunders's Gull
About These Birds
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.
Saunders's Gull
Saunders's Gull, 29–32 cm, is a Vulnerable gull breeding in coastal saltmarshes of China and Korea, wintering along East Asian coasts to Vietnam. Black hood in breeding plumage, white wing-tip mirrors. Feeds on crustaceans and invertebrates in tidal mudflats. Threatened by reclamation of Yellow Sea tidal flats.