Australian Gull-billed Tern vs Aleutian Tern
Gelochelidon macrotarsa so với Onychoprion aleuticus
Side-by-Side Comparison
| Thuộc Tính | Australian Gull-billed Tern | Aleutian Tern |
|---|---|---|
| Tên Khoa Học | Gelochelidon macrotarsa | Onychoprion aleuticus |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Least Concern | Vulnerable |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 61,1 cm (24.1 in) | 52,4 cm (20.6 in) |
| Khối Lượng | 246,66666666666666 g (8.70 oz) | 104,88 g (3.70 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 2-3 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Australian Gull-billed Tern only
Không
Aleutian Tern only
Tình Trạng Bảo Tồn
Least Concern
Australian Gull-billed Tern
Vulnerable
Aleutian Tern
About These Birds
Australian Gull-billed Tern
Australian Gull-billed Tern, 38–42 cm, is a large, heavy-billed tern endemic to Australia, breeding in arid inland wetlands. Pale grey above, white below, with a robust black bill. Takes insects, small reptiles, and crabs rather than diving for fish. Nomadic in response to inland rainfall.
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.