Fork-tailed Storm-petrel vs Ashy Storm-petrel
Hydrobates furcatus مقارنةً بـ Hydrobates homochroa
Side-by-Side Comparison
| السمة | Fork-tailed Storm-petrel | Ashy Storm-petrel |
|---|---|---|
| الاسم العلمي | Hydrobates furcatus | Hydrobates homochroa |
| الرتبة | Procellariiformes | Procellariiformes |
| الفصيلة | Hydrobatidae | Hydrobatidae |
| حالة الحفاظ | Least Concern | Endangered |
| الطول | — | — |
| طول الجناح | 31,1 cm (12.2 in) | 26,6 cm (10.5 in) |
| الوزن | 63,5 g (2.24 oz) | 36,333333333333336 g (1.28 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Least Concern
Fork-tailed Storm-petrel
Endangered
Ashy Storm-petrel
About These Birds
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.
Ashy Storm-petrel
Ashy Storm-petrel, 19–21 cm, is restricted to the California Current of the eastern Pacific; breeding on Channel Islands and the Farallon Islands. Entirely ashy brown without white rump — uncommon among storm-petrels. Endangered; less than 10,000 individuals; threatened by light pollution and introduced predators.