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Side-by-Side Comparison

Attribute	White-chinned Petrel	Balearic Shearwater
Scientific Name	Procellaria aequinoctialis	Puffinus mauretanicus
Order	Procellariiformes	Procellariiformes
Family	Procellariidae	Procellariidae
Conservation Status	Vulnerable	Critically Endangered
Length	—	—
Wingspan	76.5 cm (30.1 in)	48.4 cm (19.1 in)
Weight	1432.5 g (50.53 oz)	514.8 g (18.16 oz)
Diet	--	--
Clutch Size	1	1
Population Trend	—	—

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Habitat Comparison

Shared Habitats

None

White-chinned Petrel only

🌾 Grassland

Balearic Shearwater only

🏖️ Coastal

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Conservation Status

Vulnerable

White-chinned Petrel

Critically Endangered

Balearic Shearwater

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About These Birds

White-chinned Petrel

51–58 cm, wingspan 134–147 cm. Large black petrel with distinctive white chin patch and ivory-yellow bill with black marks. Breeds South Georgia, Falklands, Prince Edward, Crozet, Kerguelen. Vulnerable; one of the most common longline bycatch victims in Southern Ocean.

Balearic Shearwater

30–38 cm. Brown above; variably dirty-white to brown below; often shows brown smudging on flanks. Breeds only Balearic Islands, Spain. Critically Endangered with fewer than 3,000 pairs; faces extinction. Migrates to NE Atlantic; threatened by predators, fishing bycatch, and tourist development.

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More Birds to Explore

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