Bonaparte's Gull vs Aleutian Tern
Larus philadelphia so với Onychoprion aleuticus
Side-by-Side Comparison
| Thuộc Tính | Bonaparte's Gull | Aleutian Tern |
|---|---|---|
| Tên Khoa Học | Larus philadelphia | Onychoprion aleuticus |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Least Concern | Vulnerable |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 51,9 cm (20.4 in) | 52,4 cm (20.6 in) |
| Khối Lượng | 204,575 g (7.22 oz) | 104,88 g (3.70 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-3 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Bonaparte's Gull only
Không
Aleutian Tern only
Không
Tình Trạng Bảo Tồn
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.