Grey-headed Gull vs Heermann's Gull
Larus cirrocephalus เปรียบเทียบกับ Larus heermanni
Side-by-Side Comparison
| คุณสมบัติ | Grey-headed Gull | Heermann's Gull |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Larus cirrocephalus | Larus heermanni |
| อันดับ | Charadriiformes | Charadriiformes |
| วงศ์ตระกูล | Laridae | Laridae |
| สถานะการอนุรักษ์ | Least Concern | Near Threatened |
| ความยาว | — | — |
| กว้างปีก | 63.8 cm (25.1 in) | 67.2 cm (26.5 in) |
| น้ำหนัก | 357.5 g (12.61 oz) | 448.26666666666665 g (15.81 oz) |
| อาหาร | -- | -- |
| จำนวนไข่ | 2-3 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
สถานะการอนุรักษ์
Least Concern
Grey-headed Gull
Near Threatened
Heermann's Gull
About These Birds
Grey-headed Gull
Grey-headed Gull, 39–42 cm, breeds across sub-Saharan Africa and coastal South America. Pale grey hood in breeding plumage, red-orange bill and legs. Omnivore and piscivore; frequents large lakes, rivers, and coasts. Partially migratory, dispersing broadly outside breeding season.
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.