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Side-by-Side Comparison

Attribute	Guadalupe Storm-petrel	European Storm-petrel
Scientific Name	Hydrobates macrodactylus	Hydrobates pelagicus
Order	Procellariiformes	Procellariiformes
Family	Hydrobatidae	Hydrobatidae
Conservation Status	Not Evaluated	Least Concern
Length	—	—
Wingspan	32.7 cm (12.9 in)	23.8 cm (9.4 in)
Weight	36.71 g (1.29 oz)	26.5 g (0.93 oz)
Diet	--	--
Clutch Size	1	1
Population Trend	—	—

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Habitat Comparison

Shared Habitats

None

Guadalupe Storm-petrel only

🌲 Forest

European Storm-petrel only

None

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Conservation Status

Not Evaluated

Guadalupe Storm-petrel

Least Concern

European Storm-petrel

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About These Birds

Guadalupe Storm-petrel

Guadalupe Storm-petrel, 22–23 cm, is Critically Endangered — possibly extinct; no confirmed sightings since the 1930s when cats eliminated the colony on Guadalupe Island. Large, all-dark storm-petrel very similar to Black Storm-petrel. Status uncertain; intensive searches have not relocated any individuals.

European Storm-petrel

European Storm-petrel, 14–18 cm, wingspan 36–39 cm, is the smallest seabird in European waters, breeding in burrows and rock crevices on Atlantic islands from Iceland to the Mediterranean. Entirely sooty black with white rump. Strictly nocturnal at colonies. Planktivore; patters over wave surface picking up oil and plankton.

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More Birds to Explore

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