Calonectris borealis (Cory, 1881)
Family: Procellariiformes > Procellariidae
This large brown and white shearwater, with its languid flight, visits our waters during the late summer months.
Cory’s Shearwaters breed across the Atlantic archipelagos; the Azores, Canaries, Salvagems and Berlengas all have breeding colonies. Birds start to leave these colonies during August, with many heading for the Bay of Biscay. Cory’s Shearwaters occur in our waters in varying numbers between years; in some a few thousand might be seen whilst in others hardly any at all. In years when large numbers occur in the Bay of Biscay some birds head further north and are responsible for increased sightings around our coasts.
Cory’s Shearwaters spend the winter off the coasts of South America and South Africa before returning to their breeding colonies during March.
Cory's Shearwater identification is sometimes difficult.
Listen to example recordings of the main vocalisations of Cory's Shearwater, provided by xeno-canto contributors.
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Status and Trends
Population size and trends and patterns of distribution based on BTO surveys and atlases with data collected by BTO volunteers.
This species can be found on the following statutory and conservation listings and schedules.
|Species of European Conservation Concern
|IUCN Red List of Threatened Species (global)
|Schedule 1 license required (to disturb)
|Birds Directive Annex 1
|Listed on the Annexes of
Cory's Shearwaters are recorded mostly from the coastline of southwest England but there are annual records from select sites along the North Sea coast.
This vagrant is too rarely reported to map distribution change.
Cory's Shearwater is a scarce passage seabird recorded at selected seawatching locations, mostly in July and August.
Information about movement and migration based on online bird portals (e.g. BirdTrack), Ringing schemes and tracking studies.
Lifecycle and body size information about Cory's Shearwater, including statistics on nesting, eggs and lifespan based on BTO ringing and nest recording data.
Sample sizes are too small to report Biometrics for this species.
Feather measurements and photos on featherbase
|2-letter: CQ | 5-letter code: CORSH | Euring: 35970
For information in another language (where available) click on a linked name
Links to more information from ConservationEvidence.com
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