Cory's Shearwater

Calonectris diomedeaOrder: PROCELLARIIFORMESFamily: Petrels and Shearwaters (Procellariidae)
Cory's Shearwater Portrait
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Range Map for Cory's Shearwater

Overview

Cory's Shearwater: Large gray-brown shearwater, white underparts, pale yellow bill. Feeds at night on crustaceans and large sqiud it takes from the surface. Best identified by its relatively slow, languid flight compared to other shearwaters. Wings held downward. Soars on fixed wings if wind is up.

Range and Habitat

Cory's Shearwater: Breeds on the Azores and in the Mediterranean, but roams widely all over the Atlantic Ocean during the nonbreeding season.

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Listen:

Voice Text

Generally silent

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Related Birds:

Greater Shearwater
Streaked Shearwater
Manx Shearwater
Wedge-tailed Shearwater
.

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Family Petrel (Procellariidae)_blue
Species Calonectris diomedea
Length17 - 19 Inches
Wingspan39 - 49 Inches

Cory's Shearwater

Cory's Shearwater: Large gray-brown shearwater, white underparts, pale yellow bill. Feeds at night on crustaceans and large sqiud it takes from the surface. Best identified by its relatively slow, languid flight compared to other shearwaters. Wings held downward. Soars on fixed wings if wind is up.

● Song: Generally silent

● Foraging & Feeding: Cory's Shearwater: Mainly feeds at night, plunging into the ocean or picking from the surface to catch fish, squid, and crustaceans.

● Breeding & nesting: Cory's Shearwater: Nests in colonies in burrows, cracks, and crevices on ocean islands. Lays one egg that is incubated for about 54 days, with parents alternating their incubation roles about every 6 days. Chick takes first flight when 97 days old.

● Similar species: Cory's Shearwater: Greater Shearwater has a more contrasting look, including a dark cap and white collar. Bill is black.

Flight Pattern

Alternates series of rapid stiff wing beats with short glides.
Cory's Shearwater Body Illustration
● Range & Habitat: Cory's Shearwater: Breeds on the Azores and in the Mediterranean, but roams widely all over the Atlantic Ocean during the nonbreeding season.
BreedingColonial
PopulationAbundant on breeding grounds
MigrationMigratory
Weight20 - 33 Ounces