Heermann's Gull vs Western Gull
Larus heermanni в сравнении с Larus occidentalis
Side-by-Side Comparison
| Характеристика | Heermann's Gull | Western Gull |
|---|---|---|
| Научное название | Larus heermanni | Larus occidentalis |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Near Threatened | Least Concern |
| Длина | — | — |
| Размах крыльев | 67,2 cm (26.5 in) | 79,5 cm (31.3 in) |
| Масса | 448,26666666666665 g (15.81 oz) | 957,5 g (33.77 oz) |
| Питание | -- | -- |
| Размер кладки | 1-2 | 1-5 |
| Population Trend | — | — |
Habitat Comparison
Охранный статус
Near Threatened
Heermann's Gull
Least Concern
Western 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.
Western Gull
Western Gull, 55–68 cm, is the dominant large gull on the US Pacific coast from Washington to Baja California. Dark-mantled with pink legs, yellow bill with red spot. Omnivore; breeds on offshore islands, scavenges at harbours and landfills. Non-migratory; resident along its breeding coast.