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Bird name:

Cory's Shearwater

Calonectris borealis

Order

PROCELLARIIFORMES

Family

Petrels and Shearwaters (Procellariidae)

BTO 2

CQ

BTO 5

CORSH

Euring 5

00360
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ILLUSTRATION

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PHOTOS

CONSERVATION STATUS

UK Conservation Status


Not Assessed

European Conservation Status


Conservation Description


The Cory's Shearwater is an uncommon but regular visitor to marine waters around the UK, Isle of Man, and Ireland. The conservation status for this species is "not assessed' in the UK because it only occurs as an uncommon migrant and is not globally threatened.

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PHOTO SHARING AND DISCUSSION

BIRD PHOTOGRAPHY

SUMMARY

Overview

Cory's Shearwater: Herring Gull sized, long-winged seabird with light brown upperparts, dark brown wings and tail, white underparts, and a pale yellow bill. Also has an indistinct eye ring, pale edging to the feathers of the back, rump and wings, white wing linings, and dark brown flight feathers.


Range and Habitat

Cory's Shearwater: Passage visitor to the UK & Ireland. Non-breeding birds summer in coastal areas near southwestern England and Ireland. Birds winter across most of the Atlantic Ocean, also in the southeastern Indian Ocean. Can be seen along beaches and over water while fishing.

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SONGS AND CALLS

Voice Text

Generally silent, at nesting colonies makes a variety of crowing and whining notes.

INTERESTING FACTS

  • The Cory's Shearwater was named after the American ornithologist Charles B. Cory.
  • They have a special organ just above the stomach that stores fish oil as an energy reserve.
  • Along with petrels and fulmars, shearwaters are called tubenoses, because a little pipe, fixed to the top of their bill, covers their nasal holes.
  • A group of shearwaters are collectively known as an "improbability" of shearwaters.

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FAMILY DESCRIPTION

TERMINOLOGY

CREDITS

Author

David Lukas

Artist

Samira Belous

HELP ME IDENTIFY A BIRD

BACKYARD BIRDING

BIRDS AND BIRDING

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UnderpartsX

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

UpperpartsX
Back, rump, hindneck, wings, and crown.
Eye ringX
The circle around the eye formed of feathers that are a different color from the rest of the face.
Flight feathersX
Located on the wing, and collectively called remiges (singular, remex). The long stiff feathers are subdivided into two major groups based on the location and are called primaries and secondaries.
RumpX
The area between the uppertail coverts and the back of the bird.
4 and 6 letter alpha codesX

The four letter common name alpha code is is derived from the first two letters of the common first name and the first two letters of common last name. The six letter species name alpha code is derived from the first three letters of the scientific name (genus) and the first three letters of the scientific name (species). See (1) below for the rules used to create the codes..

Four-letter (for English common names) and six-letter (for scientific names) species alpha codes were developed by Pyle and DeSante (2003, North American Bird-Bander 28:64-79) to reflect A.O.U. taxonomy and nomenclature (A.O.U. 1998) as modified by Supplements 42 (Auk 117:847-858, 2000) and 43 (Auk 119:897-906, 2002). The list has been updated by Pyle and DeSante to reflect changes reported by the A.O.U from 2003 through 2006.

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ITIS CodesX

The Integrated Taxonomic Information System (ITIS) was established in the mid-1990 s as a cooperative project among several federal agencies to improve and expand upon taxonomic data (known as the NODC Taxonomic Code) maintained by the National Oceanographic Data Center (NODC), National Oceanic and Atmospheric Administration (NOAA).

To find the ITIS page for a bird species go to the ITIS web site advanced search and report page at http://www.itis.gov/advanced_search.html. You can enter the TSN or the common name of the bird. It will return the ITIS page for that bird. Another way to obtain the ITIS page is to use the Google search engine. Enter the string ITIS followed by the taxonomic ID, for example "ITIS 178041" will return the page for the Allen's Hummingbird.

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Parts of a Standing birdX
Head Feathers and MarkingsX
Parts of a Flying birdX