Black-vented Shearwater

Puffinus opisthomelas

Order

PROCELLARIIFORMES

Family

Petrels and Shearwaters (Procellariidae)

Code 4

BVSH

Code 6

PUFOPI

ITIS

Egg Color:

White



Number of Eggs:

1



Incubation Days:

51



Egg Incubator:

Both sexes



Nest Location:

On rocks near water.



Nest Material:

Lined with grasses.



Migration:

Nonmigratory



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General

Black-vented Shearwater: Medium-sized shearwater with brown-black upperparts, white underparts, and brown mottling on sides of breast and flanks. Tail is dark. Sexes are similar.

Range and Habitat

Black-vented Shearwater: This species breeds on islands off the coast of Baja California. It is a year-round visitor off the coast of southern California, but is most commonly found there in late fall and winter. Mostly winters along the Pacific coast of Mexico and areas south. Lives on open ocean, only comes ashore to breed.

Breeding and Nesting

Black-vented Shearwater: One white egg is laid in a burrow or crevice lined with grass. Both parents incubate the egg for 51 days.

Foraging and Feeding

Black-vented Shearwater: Eats a variety of fish, crustaceans, and squid. Feeds by snatching food from the water surface, but sometimes plunge dives.

Vocalization

Black-vented Shearwater: Usually silent at sea.

Similar Species

Black-vented Shearwater: Manx Shearwater has white undertail coverts and more contrast between upperparts and underparts. Pink-footed Shearwater is larger with darker breast and underwings.

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UnderpartsX

Belly, undertail coverts, chest, flanks, and foreneck.

UpperpartsX
Back, rump, hindneck, wings, and crown.
BreastX
The upper front part of a bird.
Parts of a Standing bird X
Head Feathers and Markings X
Parts of a Flying bird X