Ring-billed Gull vs Heermann's Gull
Larus delawarensis เปรียบเทียบกับ Larus heermanni
Side-by-Side Comparison
| คุณสมบัติ | Ring-billed Gull | Heermann's Gull |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Larus delawarensis | Larus heermanni |
| อันดับ | Charadriiformes | Charadriiformes |
| วงศ์ตระกูล | Laridae | Laridae |
| สถานะการอนุรักษ์ | Least Concern | Near Threatened |
| ความยาว | — | — |
| กว้างปีก | 73.2 cm (28.8 in) | 67.2 cm (26.5 in) |
| น้ำหนัก | 500.0 g (17.64 oz) | 448.26666666666665 g (15.81 oz) |
| อาหาร | -- | -- |
| จำนวนไข่ | 3 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
สถานะการอนุรักษ์
Least Concern
Ring-billed Gull
Near Threatened
Heermann's Gull
About These Birds
Ring-billed Gull
Ring-billed Gull, 43–54 cm, is North America's most abundant gull, breeding on lakes from the Great Plains to the Great Lakes and wintering on all coasts. Adult has a distinctive black ring near bill tip, yellow legs. Omnivore; thrives on garbage, parking lots, and agricultural fields.
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.