Aleutian Tern vs Lesser Crested Tern
Onychoprion aleuticus so với Thalasseus bengalensis
Side-by-Side Comparison
| Thuộc Tính | Aleutian Tern | Lesser Crested Tern |
|---|---|---|
| Tên Khoa Học | Onychoprion aleuticus | Thalasseus bengalensis |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Vulnerable | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 52,4 cm (20.6 in) | 58,6 cm (23.1 in) |
| Khối Lượng | 104,88 g (3.70 oz) | 212,25 g (7.49 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-4 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Aleutian Tern only
Lesser Crested Tern only
Không
Tình Trạng Bảo Tồn
Vulnerable
Aleutian Tern
Least Concern
Lesser Crested Tern
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.
Lesser Crested Tern
Lesser Crested Tern, 35–37 cm, breeds colonially on islands across the Indian Ocean and western Pacific, from Red Sea to Australia. Orange bill, black crest, grey mantle. Coastal piscivore; plunge-dives in tropical waters. Gregarious; often nests with Greater Crested Terns.