Heermann's Gull vs Bonaparte's Gull
Larus heermanni comparé à Larus philadelphia
Side-by-Side Comparison
| Attribut | Heermann's Gull | Bonaparte's Gull |
|---|---|---|
| Nom scientifique | Larus heermanni | Larus philadelphia |
| Ordre | Charadriiformes | Charadriiformes |
| Famille | Laridae | Laridae |
| Statut de conservation | Near Threatened | Least Concern |
| Longueur | — | — |
| Envergure | 67,2 cm (26.5 in) | 51,9 cm (20.4 in) |
| Poids | 448,26666666666665 g (15.81 oz) | 204,575 g (7.22 oz) |
| Régime alimentaire | -- | -- |
| Taille de la couvée | 1-2 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Habitats partagés
Heermann's Gull only
Aucun(e)
Bonaparte's Gull only
Statut de conservation
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.