Heermann's Gull vs Slaty-backed Gull
Larus heermanni dibandingkan dengan Larus schistisagus
Side-by-Side Comparison
| Atribut | Heermann's Gull | Slaty-backed Gull |
|---|---|---|
| Nama Ilmiah | Larus heermanni | Larus schistisagus |
| Ordo | Charadriiformes | Charadriiformes |
| Famili | Laridae | Laridae |
| Status Konservasi | Near Threatened | Least Concern |
| Panjang | — | — |
| Rentang Sayap | 67,2 cm (26.5 in) | 87,0 cm (34.3 in) |
| Berat | 448,26666666666665 g (15.81 oz) | 1280,5 g (45.17 oz) |
| Diet | -- | -- |
| Ukuran Sarang | 1-2 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Status Konservasi
Near Threatened
Heermann's Gull
Least Concern
Slaty-backed 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.
Slaty-backed Gull
Slaty-backed Gull, 55–68 cm, breeds on coasts and cliffs of the Russian Far East, wintering south to Japan and occasionally the US Pacific coast. Dark slate-grey mantle, pink legs, 'string of pearls' white mirrors on outer wing. Omnivore; scavenges at fishing ports in East Asian harbours.