Olrog's Gull vs Heermann's Gull
Larus atlanticus compared with Larus heermanni
Side-by-Side Comparison
| Attribute | Olrog's Gull | Heermann's Gull |
|---|---|---|
| Scientific Name | Larus atlanticus | Larus heermanni |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Near Threatened | Near Threatened |
| Length | — | — |
| Wingspan | 78.3 cm (30.8 in) | 67.2 cm (26.5 in) |
| Weight | 850.0 g (29.98 oz) | 448.26666666666665 g (15.81 oz) |
| Diet | -- | -- |
| Clutch Size | -- | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Near Threatened
Olrog's Gull
Near Threatened
Heermann's Gull
About These Birds
Olrog's Gull
Olrog's Gull, 55–58 cm, is an Endangered South American gull breeding in small colonies in Buenos Aires Province, Argentina. Very similar to Belcher's Gull. Piscivore; entirely dependent on mudflats and estuaries of the Buenos Aires coast. Threatened by industrial development of breeding and foraging sites.
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.