Heermann's Gull vs Yellow-footed Gull
Larus heermanni เปรียบเทียบกับ Larus livens
Side-by-Side Comparison
| คุณสมบัติ | Heermann's Gull | Yellow-footed Gull |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Larus heermanni | Larus livens |
| อันดับ | Charadriiformes | Charadriiformes |
| วงศ์ตระกูล | Laridae | Laridae |
| สถานะการอนุรักษ์ | Near Threatened | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 67.2 cm (26.5 in) | 80.7 cm (31.8 in) |
| น้ำหนัก | 448.26666666666665 g (15.81 oz) | 1295.0 g (45.68 oz) |
| อาหาร | -- | -- |
| จำนวนไข่ | 1-2 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
สถานะการอนุรักษ์
Near Threatened
Heermann's Gull
Least Concern
Yellow-footed 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.
Yellow-footed Gull
Yellow-footed Gull, 53–58 cm, has a very restricted range — endemic to the Gulf of California with post-breeding dispersal to Salton Sea. Yellow feet (unique among large western gulls), yellow bill with red spot. Piscivore and scavenger; forages on rocky shores. Resident; does not undertake long migrations.