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Cory's Shearwater
Calonectris diomedea

Map of the common names


Big pelagic seabird (L 50 cm). Upperparts brown, bill large and yellow and bellow pure white. The species breeds colonally. Nests are amongst rock crevices, recesses or burrows. Vulnerable on land, birds generally congregate offshore, forming large rafts which disperse to nesting colonies soon after nightfall. The birds feed largely on fish, cephalopods and crustaceans. Migrant.

Watercolour by Serge Nicolle

Reasons for the need for protection/inclusion in annex I

Europe holds (200.000 breeding pairs) 90% of the entire world population of the species (225.000 pairs). With the exception of the Spanish population, there have been declines in the rest of the population, including particularly large reductions in the Madeiran archipelago populations. Introduced predators, particularly cats, dogs and rats, have caused breeding failure at some colonies. The tacking of eggs, chicks and adults for human consuption still occurs at some sites. Finally, coastal building projects have caused some habitat loss and disturbance in several Mediterranean colonies.

Distribution map

yellow = summer visitor
green = resident
blue = winter visitor

Population : about 150,000 pairs

Drawing by Manuel Manolos

back to list of threatened species