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Side-by-Side Comparison

Attribut	Ashy Storm-petrel	Monteiro's Storm-petrel
Nom scientifique	Hydrobates homochroa	Hydrobates monteiroi
Ordre	Procellariiformes	Procellariiformes
Famille	Hydrobatidae	Hydrobatidae
Statut de conservation	Endangered	Vulnerable
Longueur	—	—
Envergure	26,6 cm (10.5 in)	30,6 cm (12.0 in)
Poids	36,333333333333336 g (1.28 oz)	45,5 g (1.60 oz)
Régime alimentaire	--	--
Taille de la couvée	1	1
Population Trend	—	—

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Habitat Comparison

Habitats partagés

Aucun(e)

Ashy Storm-petrel only

Aucun(e)

Monteiro's Storm-petrel only

🏖️ Coastal

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Statut de conservation

Endangered

Ashy Storm-petrel

Vulnerable

Monteiro'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.

Monteiro's Storm-petrel

Monteiro's Storm-petrel, 19–21 cm, breeds exclusively on Graciosa Island in the Azores, wintering in the central North Atlantic. Recently split from Band-rumped Storm-petrel; breeds in a different season (July–November vs March–April for Castro's). Near Threatened; very small island-restricted population.

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