Ainley's Storm-petrel vs Fork-tailed Storm-petrel
Hydrobates cheimomnestes مقارنةً بـ Hydrobates furcatus
Side-by-Side Comparison
| السمة | Ainley's Storm-petrel | Fork-tailed Storm-petrel |
|---|---|---|
| الاسم العلمي | Hydrobates cheimomnestes | Hydrobates furcatus |
| الرتبة | Procellariiformes | Procellariiformes |
| الفصيلة | Hydrobatidae | Hydrobatidae |
| حالة الحفاظ | Vulnerable | Least Concern |
| الطول | — | — |
| طول الجناح | 30,1 cm (11.9 in) | 31,1 cm (12.2 in) |
| الوزن | 41,15 g (1.45 oz) | 63,5 g (2.24 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Vulnerable
Ainley's Storm-petrel
Least Concern
Fork-tailed Storm-petrel
About These Birds
Ainley's Storm-petrel
Ainley's Storm-petrel, 19–21 cm, is a recently described species breeding on the Channel Islands off California, present in winter — unusual among storm-petrels which typically breed in summer. Dark overall, white rump with central grey stripe. Vulnerable; small population and restricted range.
Fork-tailed Storm-petrel
Fork-tailed Storm-petrel, 20–23 cm, is a distinctive pale grey storm-petrel of the North Pacific, breeding on islands from California to Japan. Pale blue-grey body, dark wing tips, forked tail. Unlike most storm-petrels, feeds largely on fish and marine debris rather than zooplankton alone. Winters offshore.