Cory's Shearwater

Calonectris borealis (Cory, 1881)

Cory's Shearwater, Calonectris borealis, breeds on Atlantic islands including the Azores, Madeira, the Porto Santo group, the Desertas, the Salvages, the Canary Islands, the Berlengas and a few islands in the western Mediterranean. It also ranges through temperate and tropical waters of the North and South Atlantic when it is not breeding. A member of the Procellariidae, it is a shearwater first described by Cory in 1881. It is marked by brownish-grey upperparts, white underparts and a yellowish bill, and it lacks the dark cap, shoulder markings and belly patch of the great shearwater.

Order

Procellariiformes

Family

Procellariidae — Petrels, Shearwaters, Diving Petrels

Breeding range

Atlantic Ocean: all main islands and islets, Azores; Madeira I., Porto Santo group and Desertas, Madeira Is.; Salvages (n of Canary Is.); Canary Is. (n, c Macaronesia, w of nw Africa), Berlenga Is. (just w of c Portugal) and a few w Mediterranean islands

Nonbreeding range

temperate and tropical North and South Atlantic Ocean