Ashy Storm-petrel vs Tristram's Storm-petrel
Hydrobates homochroa مقارنةً بـ Hydrobates tristrami
Side-by-Side Comparison
| السمة | Ashy Storm-petrel | Tristram's Storm-petrel |
|---|---|---|
| الاسم العلمي | Hydrobates homochroa | Hydrobates tristrami |
| الرتبة | Procellariiformes | Procellariiformes |
| الفصيلة | Hydrobatidae | Hydrobatidae |
| حالة الحفاظ | Endangered | Least Concern |
| الطول | — | — |
| طول الجناح | 26,6 cm (10.5 in) | 35,5 cm (14.0 in) |
| الوزن | 36,333333333333336 g (1.28 oz) | 89,0 g (3.14 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1 | 1 |
| Population Trend | — | — |
حالة الحفاظ
Endangered
Ashy Storm-petrel
Least Concern
Tristram's Storm-petrel
About These Birds
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.
Tristram's Storm-petrel
Tristram's Storm-petrel, 24–25 cm, is one of the largest storm-petrels, breeding on small Hawaiian and Ogasawara Islands in the North Pacific. All dark; broad wings, moderate tail fork. Nocturnal at colonies in winter (October–April). Planktivore; poorly known at sea; winters south into tropical Pacific.