Heermann's Gull vs Arctic Herring Gull
Larus heermanni в сравнении с Larus smithsonianus
Side-by-Side Comparison
| Характеристика | Heermann's Gull | Arctic Herring Gull |
|---|---|---|
| Научное название | Larus heermanni | Larus smithsonianus |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Near Threatened | Least Concern |
| Длина | — | — |
| Размах крыльев | 67,2 cm (26.5 in) | 85,9 cm (33.8 in) |
| Масса | 448,26666666666665 g (15.81 oz) | 1108,0 g (39.08 oz) |
| Питание | -- | -- |
| Размер кладки | 1-2 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Heermann's Gull only
Нет
Arctic Herring Gull only
Охранный статус
Near Threatened
Heermann's Gull
Least Concern
Arctic Herring 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.
Arctic Herring Gull
Arctic Herring Gull, 55–66 cm, breeds across Arctic North America and winters on all coasts of the US. Formerly lumped with European Herring Gull; darker-eyed on average, slightly more northerly range. Omnivore and scavenger; abundant at fishing ports, dumps, and beaches in winter.