Great Black-backed Gull vs Aleutian Tern
Larus marinus compared with Onychoprion aleuticus
Side-by-Side Comparison
| Attribute | Great Black-backed Gull | Aleutian Tern |
|---|---|---|
| Scientific Name | Larus marinus | Onychoprion aleuticus |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Least Concern | Vulnerable |
| Length | — | — |
| Wingspan | 95.6 cm (37.6 in) | 52.4 cm (20.6 in) |
| Weight | 1678.3333333333333 g (59.20 oz) | 104.88 g (3.70 oz) |
| Diet | -- | -- |
| Clutch Size | 1-3 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Shared Habitats
Great Black-backed Gull only
None
Aleutian Tern only
None
Conservation Status
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.