Cory's Shearwater Calonectris diomedea

  • Order: Procellariiformes
  • Family: Procellariidae
  • Polytypic: 2 subspecies
  • Authors needed...

The Cory’s Shearwater has traditionally been considered to comprise three subspecies, of which at least two have been recorded in the Neotropical region. However, one of these, C. d. edwardsii, which is confined as a breeding bird to the Cape Verde Islands, off western Africa, is increasingly recognized at species level (including here). The other two subspecies breed on islands in the Mediterranean (the nominate) or the northeast Atlantic (C. d. borealis), respectively. All three are large, gray-brown and white shearwaters, which are consistently differentiated by relatively minor differences in wing and bill patterns, as well as by overall size. The Cory’s Shearwater is poorly known in the Neotropical region, where it has been definitely recorded on a relatively small number of occasions to date, and not all of the birds concerned have been specifically identified to taxon. However, both the nominate subspecies and C. d. borealis are strongly migratory, with one major wintering area apparently lying off southern Africa, and further records in the Neotropics can clearly be expected.

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Calls (borealis)

© Cédric Mroczko

  • Year-round
  • Migration
  • Breeding
  • Non-Breeding

Recommended Citation

Cory's Shearwater (Calonectris diomedea), In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. retrieved from Neotropical Birds Online: