Heermann's Gull vs Bonaparte's Gull
Larus heermanni ile kıyaslandığında Larus philadelphia
Side-by-Side Comparison
| Özellik | Heermann's Gull | Bonaparte's Gull |
|---|---|---|
| Bilimsel Ad | Larus heermanni | Larus philadelphia |
| Takım | Charadriiformes | Charadriiformes |
| Familya | Laridae | Laridae |
| Koruma Durumu | Near Threatened | Least Concern |
| Uzunluk | — | — |
| Kanat Açıklığı | 67,2 cm (26.5 in) | 51,9 cm (20.4 in) |
| Ağırlık | 448,26666666666665 g (15.81 oz) | 204,575 g (7.22 oz) |
| Beslenme | -- | -- |
| Kuluçka Büyüklüğü | 1-2 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Ortak Yaşam Alanları
Heermann's Gull only
Hiçbiri
Bonaparte's Gull only
Koruma Durumu
Near Threatened
Heermann's Gull
Least Concern
Bonaparte's 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.
Bonaparte's Gull
Bonaparte's Gull, 28–30 cm, is North America's smallest Larus gull, breeding in boreal forests near lakes and wintering on both coasts. Breeding adult has a black hood; underwing shows white triangular flash. Planktivore and piscivore; buoyant, tern-like flight. Migratory; forms large winter flocks.