Aleutian Tern vs Royal Tern
Onychoprion aleuticus comparé à Thalasseus maximus
Side-by-Side Comparison
| Attribut | Aleutian Tern | Royal Tern |
|---|---|---|
| Nom scientifique | Onychoprion aleuticus | Thalasseus maximus |
| Ordre | Charadriiformes | Charadriiformes |
| Famille | Laridae | Laridae |
| Statut de conservation | Vulnerable | Least Concern |
| Longueur | — | — |
| Envergure | 52,4 cm (20.6 in) | 72,7 cm (28.6 in) |
| Poids | 104,88 g (3.70 oz) | 402,3333333333333 g (14.19 oz) |
| Régime alimentaire | -- | -- |
| Taille de la couvée | 1-4 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Statut de conservation
Vulnerable
Aleutian Tern
Least Concern
Royal Tern
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.
Royal Tern
Royal Tern, 45–50 cm, is a large, powerful tern of American and West African coasts. Orange bill, shaggy black crest (full only briefly in spring), pale grey mantle. Piscivore; plunge-dives from 10 m for mullet and menhaden. Nests in dense colonies; often seen loafing on beaches year-round.