Heermann's Gull vs Glaucous Gull
Larus heermanni compared with Larus hyperboreus
Side-by-Side Comparison
| Attribute | Heermann's Gull | Glaucous Gull |
|---|---|---|
| Scientific Name | Larus heermanni | Larus hyperboreus |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Near Threatened | Least Concern |
| Length | — | — |
| Wingspan | 67.2 cm (26.5 in) | 92.6 cm (36.5 in) |
| Weight | 448.26666666666665 g (15.81 oz) | 1933.3333333333333 g (68.20 oz) |
| Diet | -- | -- |
| Clutch Size | 1-2 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Near Threatened
Heermann's Gull
Least Concern
Glaucous 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.
Glaucous Gull
Glaucous Gull, 62–68 cm, is an imposing all-white Arctic gull — no dark markings on wing tips. Breeds across the High Arctic and ventures south in winter to both sides of the North Atlantic and Pacific. Predator and scavenger; preys on seabird eggs and chicks at colonies. Powerful aggressive kleptoparasite.