Aleutian Tern vs Large-billed Tern
Onychoprion aleuticus verglichen mit Phaetusa simplex
Side-by-Side Comparison
| Merkmal | Aleutian Tern | Large-billed Tern |
|---|---|---|
| Wissenschaftlicher Name | Onychoprion aleuticus | Phaetusa simplex |
| Ordnung | Charadriiformes | Charadriiformes |
| Familie | Laridae | Laridae |
| Erhaltungsstatus | Vulnerable | Least Concern |
| Länge | — | — |
| Flügelspannweite | 52,4 cm (20.6 in) | 58,3 cm (23.0 in) |
| Gewicht | 104,88 g (3.70 oz) | 241,5 g (8.52 oz) |
| Ernährung | -- | -- |
| Gelegegröße | 1-4 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
Gemeinsame Lebensräume
Aleutian Tern only
Large-billed Tern only
-
Erhaltungsstatus
Vulnerable
Aleutian Tern
Least Concern
Large-billed 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.
Large-billed Tern
Large-billed Tern, 36–38 cm, is a distinctive South American freshwater tern of major river systems including the Amazon, Paraná, and Orinoco. Bold black and white plumage with a massive yellow bill and yellow feet. Piscivore; plunge-dives from height into rivers. Resident in tropical lowlands.