Olrog's Gull vs Aleutian Tern
Larus atlanticus compared with Onychoprion aleuticus
Side-by-Side Comparison
| Attribute | Olrog's Gull | Aleutian Tern |
|---|---|---|
| Scientific Name | Larus atlanticus | Onychoprion aleuticus |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Near Threatened | Vulnerable |
| Length | — | — |
| Wingspan | 78.3 cm (30.8 in) | 52.4 cm (20.6 in) |
| Weight | 850.0 g (29.98 oz) | 104.88 g (3.70 oz) |
| Diet | -- | -- |
| Clutch Size | -- | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Near Threatened
Olrog's Gull
Vulnerable
Aleutian Tern
About These Birds
Olrog's Gull
Olrog's Gull, 55–58 cm, is an Endangered South American gull breeding in small colonies in Buenos Aires Province, Argentina. Very similar to Belcher's Gull. Piscivore; entirely dependent on mudflats and estuaries of the Buenos Aires coast. Threatened by industrial development of breeding and foraging sites.
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.