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Side-by-Side Comparison

คุณสมบัติ	Ashy Storm-petrel	Tristram's Storm-petrel
ชื่อวิทยาศาสตร์	Hydrobates homochroa	Hydrobates tristrami
อันดับ	Procellariiformes	Procellariiformes
วงศ์ตระกูล	Hydrobatidae	Hydrobatidae
สถานะการอนุรักษ์	Endangered	Least Concern
ความยาว	—	—
กว้างปีก	26.6 cm (10.5 in)	35.5 cm (14.0 in)
น้ำหนัก	36.333333333333336 g (1.28 oz)	89.0 g (3.14 oz)
อาหาร	--	--
จำนวนไข่	1	1
Population Trend	—	—

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สถานะการอนุรักษ์

Endangered

Ashy Storm-petrel

Least Concern

Tristram's Storm-petrel

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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.

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