Great shearwater

Ardenna gravis

Adopt a Great shearwater
Up to 122cm
Invasive predators, poaching, bycatch and pollution.
Flight is similar to Cory’s Shearwater. Transequatorial migration in Arp., moving to NW South America up to Canada, and onto the NE Atlantic before returning south in Nov.
Fish, squid and fish offal.
Conservation Status


In Portugal
Regular passage migrant (Aug. – Oct.) when heading South. Scarcer in Spring migration. Rarely seen from land.
Nests on sloping ground, mainly in areas of tussock and grass in the South Atlantic.

Find out more about the marine megafauna in Portugal with the official AIMM Species Guide.

The Species Guide is a digital guide in English where you’ll find various information about the marine species that occur in mainland Portugal. You’ll find biological information, behavior, conservation status and much more!


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