Black-bellied Storm-petrel vs Wilson's Storm-petrel
Fregetta tropica مقارنةً بـ Oceanites oceanicus
Side-by-Side Comparison
| السمة | Black-bellied Storm-petrel | Wilson's Storm-petrel |
|---|---|---|
| الاسم العلمي | Fregetta tropica | Oceanites oceanicus |
| الرتبة | Procellariiformes | Procellariiformes |
| الفصيلة | Oceanitidae | Oceanitidae |
| حالة الحفاظ | Least Concern | Least Concern |
| الطول | — | — |
| طول الجناح | 32,9 cm (13.0 in) | 29,4 cm (11.6 in) |
| الوزن | 53,0 g (1.87 oz) | 37,5 g (1.32 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1 | 1 |
| Population Trend | — | — |
حالة الحفاظ
Least Concern
Black-bellied Storm-petrel
Least Concern
Wilson's Storm-petrel
About These Birds
Black-bellied Storm-petrel
Black-bellied Storm-petrel, 19–21 cm, breeds on sub-Antarctic islands and disperses widely across the Southern Ocean. Dark above with white rump; distinctive black streak through the white belly. Patters over wave surfaces picking up plankton. Long-distance pelagic movements after breeding.
Wilson's Storm-petrel
Wilson's Storm-petrel, 15–19 cm, wingspan 38–42 cm, may be the world's most abundant bird with billions breeding on Antarctic and sub-Antarctic islands. Dark brown with white rump, yellow-webbed feet dangling below body while 'walking' on water surface. Planktivore; skims copepods and krill. Circumglobal migrant.