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Side-by-Side Comparison

Attribute	Magellanic Diving-petrel	Balearic Shearwater
Scientific Name	Pelecanoides magellani	Puffinus mauretanicus
Order	Procellariiformes	Procellariiformes
Family	Procellariidae	Procellariidae
Conservation Status	Least Concern	Critically Endangered
Length	—	—
Wingspan	25.1 cm (9.9 in)	48.4 cm (19.1 in)
Weight	149.25 g (5.26 oz)	514.8 g (18.16 oz)
Diet	--	--
Clutch Size	1	1
Population Trend	—	—

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Habitat Comparison

Shared Habitats

🏖️ Coastal

Magellanic Diving-petrel only

None

Balearic Shearwater only

None

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Conservation Status

Least Concern

Magellanic Diving-petrel

Critically Endangered

Balearic Shearwater

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About These Birds

Magellanic Diving-petrel

20–24 cm. Dark above, white below; narrow white tips to secondary feathers. Breeds southern Chile and Argentina (Strait of Magellan and Falklands). Year-round resident in coastal cold waters. Feeds on fish and crustaceans by pursuit-diving; nests in burrows on coastal islands.

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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