Aleutian Tern vs Common Tern
Onychoprion aleuticus comparado com Sterna hirundo
Side-by-Side Comparison
| Atributo | Aleutian Tern | Common Tern |
|---|---|---|
| Nome científico | Onychoprion aleuticus | Sterna hirundo |
| Ordem | Charadriiformes | Charadriiformes |
| Família | Laridae | Laridae |
| Estado de conservação | Vulnerable | Least Concern |
| Comprimento | — | — |
| Envergadura | 52,4 cm (20.6 in) | 50,7 cm (20.0 in) |
| Peso | 104,88 g (3.70 oz) | 125,75 g (4.44 oz) |
| Dieta | -- | -- |
| Tamanho da postura | 1-4 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
Habitats partilhados
Aleutian Tern only
Nenhum
Common Tern only
Nenhum
Estado de conservação
Vulnerable
Aleutian Tern
Least Concern
Common 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.
Common Tern
Common Tern, 31–35 cm, wingspan 77–98 cm, is among the most widespread seabirds, breeding across the Holarctic and wintering in the Southern Hemisphere. Grey back, white below, orange-red bill with dark tip, black cap. Plunge-dives for fish. One of the longest-distance migrants in the Northern Hemisphere.