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Side-by-Side Comparison

คุณสมบัติ	Ainley's Storm-petrel	Matsudaira's Storm-petrel
ชื่อวิทยาศาสตร์	Hydrobates cheimomnestes	Hydrobates matsudairae
อันดับ	Procellariiformes	Procellariiformes
วงศ์ตระกูล	Hydrobatidae	Hydrobatidae
สถานะการอนุรักษ์	Vulnerable	Vulnerable
ความยาว	—	—
กว้างปีก	30.1 cm (11.9 in)	37.0 cm (14.6 in)
น้ำหนัก	41.15 g (1.45 oz)	62.0 g (2.19 oz)
อาหาร	--	--
จำนวนไข่	1	--
Population Trend	—	—

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สถานะการอนุรักษ์

Vulnerable

Ainley's Storm-petrel

Vulnerable

Matsudaira's Storm-petrel

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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.

Matsudaira's Storm-petrel

Matsudaira's Storm-petrel, 24–26 cm, is a large, all-dark storm-petrel breeding on Volcano and Ryukyu Islands of Japan. Long-winged, slow flapping flight. Winters off East Africa and the Arabian Sea — an Indian Ocean migrant from North Pacific colonies. Planktivore and surface feeder.

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