Black-capped Petrel vs Antarctic Petrel

Pterodroma hasitata compared with Thalassoica antarctica

Side-by-Side Comparison

Attribute Black-capped Petrel Antarctic Petrel
Scientific Name Pterodroma hasitata Thalassoica antarctica
Order Procellariiformes Procellariiformes
Family Procellariidae Procellariidae
Conservation Status Endangered Least Concern
Length — —
Wingspan 56.6 cm (22.3 in) 59.2 cm (23.3 in)
Weight 443.8333333333333 g (15.66 oz) 658.3333333333334 g (23.22 oz)
Diet -- --
Clutch Size 1 1
Population Trend — —

Habitat Comparison

Shared Habitats

None

Black-capped Petrel only

Antarctic Petrel only

None

Conservation Status

Endangered

Black-capped Petrel

Least Concern

Antarctic Petrel

About These Birds

Black-capped Petrel

40 cm. Large gadfly petrel; dark cap and upperparts, white underparts with dark carpal bar. Breeds Hispaniola and Cuba; once very abundant. Endangered; longline bycatch and habitat loss are key threats. Ranges widely in western and central Atlantic; crepuscular at colonies.

Antarctic Petrel

40–46 cm, wingspan 100–110 cm. Striking chocolate-brown and white pattern; only member of its genus. Breeds solely in Antarctica on cliff ledges; among the most southerly-nesting birds. Feeds on fish and krill beneath pack ice. Returns to colonies in October; one of the most abundant Antarctic seabirds.

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