Glaucous-winged Gull vs Aleutian Tern
Larus glaucescens so với Onychoprion aleuticus
Side-by-Side Comparison
| Thuộc Tính | Glaucous-winged Gull | Aleutian Tern |
|---|---|---|
| Tên Khoa Học | Larus glaucescens | 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 | 1095,0166666666667 g (38.63 oz) | 104,88 g (3.70 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-6 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Glaucous-winged Gull only
Không
Aleutian Tern only
Tình Trạng Bảo Tồn
Least Concern
Glaucous-winged Gull
Vulnerable
Aleutian Tern
About These Birds
Glaucous-winged Gull
Glaucous-winged Gull, 56–68 cm, is the common large gull of the North Pacific from Alaska to California. Distinctive pale grey wing tips (not black) give a uniform grey appearance. Omnivore; forages on rocky shores and at harbours. Hybridises with Western, Herring, and Glaucous Gulls.
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.