Ring-billed Gull vs Aleutian Tern
Larus delawarensis compared with Onychoprion aleuticus
Side-by-Side Comparison
| Attribute | Ring-billed Gull | Aleutian Tern |
|---|---|---|
| Scientific Name | Larus delawarensis | Onychoprion aleuticus |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Least Concern | Vulnerable |
| Length | — | — |
| Wingspan | 73.2 cm (28.8 in) | 52.4 cm (20.6 in) |
| Weight | 500.0 g (17.64 oz) | 104.88 g (3.70 oz) |
| Diet | -- | -- |
| Clutch Size | 3 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Ring-billed Gull
Vulnerable
Aleutian Tern
About These Birds
Ring-billed Gull
Ring-billed Gull, 43–54 cm, is North America's most abundant gull, breeding on lakes from the Great Plains to the Great Lakes and wintering on all coasts. Adult has a distinctive black ring near bill tip, yellow legs. Omnivore; thrives on garbage, parking lots, and agricultural fields.
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.