Buller's Shearwater

Puffinus bulleri

Order

PROCELLARIIFORMES

Family

Petrels and Shearwaters (Procellariidae)

Code 4

BULS

Code 6

PUFBUL

ITIS

Breeding Location:

Islands, sandy or rocky

Breeding Type:

Monogamous, Colonial

Breeding Population:

Yes but uncommon

Egg Color:

White

Number of Eggs:

Incubation Days:

Egg Incubator:

Both sexes

Nest Material:

Lined with leaves, twigs, and pebbles.

Migration:

Migratory

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General

Buller’s Shearwater: Medium-sized shearwater with gray upperparts and white underparts. Head has white face, black cap, and black bill. Tail is black and legs are pink. Dark gray M-pattern is visible across upperwings and back in flight. Sexes are similar.

Range and Habitat

Buller's Shearwater: Breeds on islands near New Zealand; summer visitor to north Pacific, appearing off west coast from Aleutian Islands south to California. Pelagic, comes ashore only to breed.

Breeding and Nesting

Buller's Shearwater: One white egg is laid in a burrow or rock crevice lined with leaves, twigs, and pebbles. Both parents incubate the egg for 51 days.

Foraging and Feeding

Buller's Shearwater: Feeds on krill, small fish, squid, and jellyfish. Lands on water to pick up food from surface; sometimes ducks head beneath to snatch food.

Vocalization

Buller's Shearwater: Silent at sea.

Similar Species

Buller's Shearwater: Black-vented Shearwater is smaller and has plain upperwings.

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Bird Call Credits: The Macaulay Library of Natural Sounds at the Cornell Lab of Ornithology. Martyn Stewart, http://www.naturesound.org, Redmond, Washington USA. The reuse or copying of bird calls in this database is strictly forbidden2.

Field Guide to Birds of North America