Lesser Black-backed Gull vs Aleutian Tern
Larus fuscus so với Onychoprion aleuticus
Side-by-Side Comparison
| Thuộc Tính | Lesser Black-backed Gull | Aleutian Tern |
|---|---|---|
| Tên Khoa Học | Larus fuscus | Onychoprion aleuticus |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Least Concern | Vulnerable |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 82,4 cm (32.4 in) | 52,4 cm (20.6 in) |
| Khối Lượng | 841,3333333333334 g (29.68 oz) | 104,88 g (3.70 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 2-3 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Lesser Black-backed Gull only
Không
Aleutian Tern only
Không
Tình Trạng Bảo Tồn
Least Concern
Lesser Black-backed Gull
Vulnerable
Aleutian Tern
About These Birds
Lesser Black-backed Gull
Lesser Black-backed Gull, 48–56 cm, breeds across Northern Europe and Iceland, undertaking one of the longest migrations of any large gull — to winter quarters in East Africa, India, and the Gulf. Slate-black mantle, yellow legs, yellow bill with red spot. Omnivore; increasingly winters in North America.
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.