Olrog's Gull vs Heermann's Gull
Larus atlanticus so với Larus heermanni
Side-by-Side Comparison
| Thuộc Tính | Olrog's Gull | Heermann's Gull |
|---|---|---|
| Tên Khoa Học | Larus atlanticus | Larus heermanni |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Near Threatened | Near Threatened |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 78,3 cm (30.8 in) | 67,2 cm (26.5 in) |
| Khối Lượng | 850,0 g (29.98 oz) | 448,26666666666665 g (15.81 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | -- | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Tình Trạng Bảo Tồn
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.