Buller's Shearwater

Ardenna bulleri

Order

PROCELLARIIFORMES

Family

Petrels and Shearwaters (Procellariidae)

Code 4

BULS

Code 6

PUFBUL

ITIS

ILLUSTRATION

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PHOTOS

CONSERVATION STATUS

Vulnerable

The Buller's Shearwater only breeds on a few islands off the coast of New Zealand, and ranges across much of the Pacific Ocean at other times of the year. It has an estimated population of 2.5 million birds. The Buller's Shearwater is currently rated as Vulnerable due to the extremely limited breeding area of this bird combined with potential threats from over-fishing of food sources.

SUMMARY

Overview

Buller's Shearwater: This medium-sized bird has gray upperparts and white underparts. The head has a white face and black cap. The bill and tail are black. The legs and feet are pink. A dark gray M-pattern is visible across the upperwings and back in flight. It rotates deep steady wing beats with long glides. It soars in high winds. It feeds on krill, small fish, and jellyfish. The sexes are similar.

 

Range and Habitat

Buller's Shearwater: This species breeds on islands of the Poor Knights group north of New Zealand, especially on Tawhiti Rahi and Aorangi. It is a trans-equatorial migrant, and a regular summer visitor to north Pacific, appearing off west coast from Aleutian Islands south to California. These birds are pelagic, coming ashore only to breed.

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Buller's Shearwater SONGS AND CALLS

Buller's Shearwater Silent

Generally silent except on breeding grounds.

Similar Sounding


Voice Text

Generally silent at sea.

INTERESTING FACTS

  • In flight, the Buller's Shearwater is more graceful than other shearwaters, flapping less and gliding more.
  • Some have been known to nest in burial caves and may use human bones as nest material.
  • When taking off from the nesting colony, they may climb into trees to take flight more easily.
  • A group of shearwaters are collectively known as an "improbability" of shearwaters.

SIMILAR BIRDS

RANGE MAP NORTH AMERICA

About this North America Map

This map shows how this species is distributed across North America.

RANGE MAP HAWAII

About this Hawaii Map

This map shows how this species is distributed across the Hawaiian island.

FAMILY DESCRIPTION

TERMINOLOGY

CREDITS

Author

Artist

Irina Rud-Volga

HELP ME IDENTIFY A BIRD

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UnderpartsX

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

UpperpartsX
Back, rump, hindneck, wings, and crown.
CapX
The area on top of the head of the bird.
FaceX
The front part of the head consisting of the bill, eyes, cheeks and chin.
PelagicX
The pelagic is a type of bird whose habitat is on the open ocean rather than in a coastal region or on inland bodies of water (lakes, rivers). An example of a pelagic bird is the blacklegged kittiwake.
Parts of a Standing bird X
Head Feathers and Markings X
Parts of a Flying bird X