Aleutian Tern vs Black-legged Kittiwake
Onychoprion aleuticus compared with Rissa tridactyla
Side-by-Side Comparison
| Attribute | Aleutian Tern | Black-legged Kittiwake |
|---|---|---|
| Scientific Name | Onychoprion aleuticus | Rissa tridactyla |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Vulnerable | Vulnerable |
| Length | — | — |
| Wingspan | 52.4 cm (20.6 in) | 60.2 cm (23.7 in) |
| Weight | 104.88 g (3.70 oz) | 439.3333333333333 g (15.50 oz) |
| Diet | -- | -- |
| Clutch Size | 1-4 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Shared Habitats
Aleutian Tern only
Black-legged Kittiwake only
None
Conservation Status
Vulnerable
Aleutian Tern
Vulnerable
Black-legged Kittiwake
About These Birds
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.
Black-legged Kittiwake
Black-legged Kittiwake, 38–40 cm, wingspan 91–105 cm, is the most abundant gull globally, with millions breeding on cliff ledges across the North Atlantic and Pacific. White body, grey mantle, solid black wing tips, yellow bill, black legs. Pelagic piscivore outside breeding. Vulnerable; declining.