Aleutian Tern vs Damara Tern
Onychoprion aleuticus verglichen mit Sternula balaenarum
Side-by-Side Comparison
| Merkmal | Aleutian Tern | Damara Tern |
|---|---|---|
| Wissenschaftlicher Name | Onychoprion aleuticus | Sternula balaenarum |
| Ordnung | Charadriiformes | Charadriiformes |
| Familie | Laridae | Laridae |
| Erhaltungsstatus | Vulnerable | Least Concern |
| Länge | — | — |
| Flügelspannweite | 52,4 cm (20.6 in) | 33,9 cm (13.3 in) |
| Gewicht | 104,88 g (3.70 oz) | 50,675 g (1.79 oz) |
| Ernährung | -- | -- |
| Gelegegröße | 1-4 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Erhaltungsstatus
Vulnerable
Aleutian Tern
Least Concern
Damara 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.
Damara Tern
Damara Tern, 22–24 cm, is a Vulnerable tern endemic to the Namibian and South African coast. White below, grey above, with a black cap and yellow bill. Breeds sparsely on Namibian beaches; winters north to Gulf of Guinea. Highly sensitive to coastal development and off-road vehicles.