Bonaparte's Gull vs Aleutian Tern
Larus philadelphia в сравнении с Onychoprion aleuticus
Side-by-Side Comparison
| Характеристика | Bonaparte's Gull | Aleutian Tern |
|---|---|---|
| Научное название | Larus philadelphia | Onychoprion aleuticus |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Least Concern | Vulnerable |
| Длина | — | — |
| Размах крыльев | 51,9 cm (20.4 in) | 52,4 cm (20.6 in) |
| Масса | 204,575 g (7.22 oz) | 104,88 g (3.70 oz) |
| Питание | -- | -- |
| Размер кладки | 1-3 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Bonaparte's Gull only
Нет
Aleutian Tern only
Нет
Охранный статус
Least Concern
Bonaparte's Gull
Vulnerable
Aleutian Tern
About These Birds
Bonaparte's Gull
Bonaparte's Gull, 28–30 cm, is North America's smallest Larus gull, breeding in boreal forests near lakes and wintering on both coasts. Breeding adult has a black hood; underwing shows white triangular flash. Planktivore and piscivore; buoyant, tern-like flight. Migratory; forms large winter flocks.
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.