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Side-by-Side Comparison

السمة	Least Storm-petrel	Swinhoe's Storm-petrel
الاسم العلمي	Hydrobates microsoma	Hydrobates monorhis
الرتبة	Procellariiformes	Procellariiformes
الفصيلة	Hydrobatidae	Hydrobatidae
حالة الحفاظ	Least Concern	Near Threatened
الطول	—	—
طول الجناح	23,8 cm (9.4 in)	30,5 cm (12.0 in)
الوزن	18,0 g (0.63 oz)	39,55 g (1.40 oz)
النظام الغذائي	--	--
عدد البيض في الوضع	1	1
Population Trend	—	—

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حالة الحفاظ

Least Concern

Least Storm-petrel

Near Threatened

Swinhoe's Storm-petrel

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About These Birds

Least Storm-petrel

World's smallest seabird at 13–15 cm. Sooty-black with white rump; short rounded wings. Breeds Baja California islands; ranges offshore in eastern Pacific to Ecuador. Feeds on zooplankton and small fish by pattering on the surface. Nocturnal at breeding colonies; Near Threatened.

Swinhoe's Storm-petrel

Swinhoe's Storm-petrel, 19–20 cm, breeds on small islands off Korea and in the western North Pacific, wintering in the Indian Ocean. Entirely dark sooty brown with a forked tail and white rump largely hidden. Long-distance migrant crossing two oceans. Planktivore; poorly studied due to nocturnal, crevice-nesting habits.

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