Heermann's Gull vs Arctic Herring Gull
Larus heermanni so với Larus smithsonianus
Side-by-Side Comparison
| Thuộc Tính | Heermann's Gull | Arctic Herring Gull |
|---|---|---|
| Tên Khoa Học | Larus heermanni | Larus smithsonianus |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Near Threatened | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 67,2 cm (26.5 in) | 85,9 cm (33.8 in) |
| Khối Lượng | 448,26666666666665 g (15.81 oz) | 1108,0 g (39.08 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-2 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Heermann's Gull only
Không
Arctic Herring Gull only
Tình Trạng Bảo Tồn
Near Threatened
Heermann's Gull
Least Concern
Arctic Herring Gull
About These Birds
Heermann's Gull
Heermann's Gull, 46–51 cm, is distinctive — dark grey body, white head (breeding), red bill. Breeds almost entirely on Isla Rasa in the Gulf of California, then disperses north along the Pacific coast to British Columbia. Kleptoparasite; steals fish from Brown Pelicans. Near Threatened; range highly restricted.
Arctic Herring Gull
Arctic Herring Gull, 55–66 cm, breeds across Arctic North America and winters on all coasts of the US. Formerly lumped with European Herring Gull; darker-eyed on average, slightly more northerly range. Omnivore and scavenger; abundant at fishing ports, dumps, and beaches in winter.