Great Black-backed Gull vs Aleutian Tern
Larus marinus comparé à Onychoprion aleuticus
Side-by-Side Comparison
| Attribut | Great Black-backed Gull | Aleutian Tern |
|---|---|---|
| Nom scientifique | Larus marinus | Onychoprion aleuticus |
| Ordre | Charadriiformes | Charadriiformes |
| Famille | Laridae | Laridae |
| Statut de conservation | Least Concern | Vulnerable |
| Longueur | — | — |
| Envergure | 95,6 cm (37.6 in) | 52,4 cm (20.6 in) |
| Poids | 1678,3333333333333 g (59.20 oz) | 104,88 g (3.70 oz) |
| Régime alimentaire | -- | -- |
| Taille de la couvée | 1-3 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Habitats partagés
Great Black-backed Gull only
Aucun(e)
Aleutian Tern only
Aucun(e)
Statut de conservation
Least Concern
Great Black-backed Gull
Vulnerable
Aleutian Tern
About These Birds
Great Black-backed Gull
Great Black-backed Gull, 61–74 cm, wingspan 142–168 cm, is the world's largest gull, breeding along North Atlantic coasts. Jet-black mantle, white body, massive yellow bill. Dominant predator among seabirds; preys on seabird chicks, puffins, rabbits, as well as scavenging. Partially migratory.
Aleutian Tern
Aleutian Tern, 32–34 cm, breeds colonially in Alaska and Russian Far East, wintering in Southeast Asian waters — one of the most poorly tracked migrations among seabirds. Dark grey above, white below, black cap with white forehead. Piscivore; dives for small fish. Near Threatened.