Heermann's Gull vs Ivory Gull
Larus heermanni เปรียบเทียบกับ Pagophila eburnea
Side-by-Side Comparison
| คุณสมบัติ | Heermann's Gull | Ivory Gull |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Larus heermanni | Pagophila eburnea |
| อันดับ | Charadriiformes | Charadriiformes |
| วงศ์ตระกูล | Laridae | Laridae |
| สถานะการอนุรักษ์ | Near Threatened | Near Threatened |
| ความยาว | — | — |
| กว้างปีก | 67.2 cm (26.5 in) | 66.7 cm (26.3 in) |
| น้ำหนัก | 448.26666666666665 g (15.81 oz) | 578.3333333333334 g (20.40 oz) |
| อาหาร | -- | -- |
| จำนวนไข่ | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
สถานะการอนุรักษ์
Near Threatened
Heermann's Gull
Near Threatened
Ivory 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.
Ivory Gull
Ivory Gull, 40–43 cm, is entirely white with black legs, breeding only on High Arctic ice caps and cliffs in Canada, Greenland, Svalbard, and Russia. Winters at sea ice edges in the High Arctic. Scavenges on marine mammal carcasses and sea ice invertebrates. Near Threatened; climate-sensitive.