Aleutian Tern vs South American Tern
Onychoprion aleuticus ile kıyaslandığında Sterna hirundinacea
Side-by-Side Comparison
| Özellik | Aleutian Tern | South American Tern |
|---|---|---|
| Bilimsel Ad | Onychoprion aleuticus | Sterna hirundinacea |
| Takım | Charadriiformes | Charadriiformes |
| Familya | Laridae | Laridae |
| Koruma Durumu | Vulnerable | Least Concern |
| Uzunluk | — | — |
| Kanat Açıklığı | 52,4 cm (20.6 in) | 59,3 cm (23.3 in) |
| Ağırlık | 104,88 g (3.70 oz) | 190,25 g (6.71 oz) |
| Beslenme | -- | -- |
| Kuluçka Büyüklüğü | 1-4 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Ortak Yaşam Alanları
Aleutian Tern only
South American Tern only
Hiçbiri
Koruma Durumu
Vulnerable
Aleutian Tern
Least Concern
South American 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.
South American Tern
South American Tern, 40–44 cm, is the largest South American tern, breeding from Peru around Cape Horn to southeastern Brazil. Red bill, grey mantle, black cap. Pelagic and coastal piscivore; strong plunge-diver. Movements poorly known; some populations may migrate north along both coasts.