Heermann's Gull vs Ivory Gull
Larus heermanni в сравнении с Pagophila eburnea
Side-by-Side Comparison
| Характеристика | Heermann's Gull | Ivory Gull |
|---|---|---|
| Научное название | Larus heermanni | Pagophila eburnea |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Near Threatened | Near Threatened |
| Длина | — | — |
| Размах крыльев | 67,2 cm (26.5 in) | 66,7 cm (26.3 in) |
| Масса | 448,26666666666665 g (15.81 oz) | 578,3333333333334 g (20.40 oz) |
| Питание | -- | -- |
| Размер кладки | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Охранный статус
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.