A seabird that breeds on Bugio Island in the Madeira archipelago. During incubation it can make long flights across the North Atlantic; after breeding it winters mainly in the South and West Atlantic.
A medium-sized, slim petrel with a relatively heavy bill. The upperparts and underwings are dark grey, while the rest of the body is white; it has a white patch between bill and eye.
It nests on Bugio at 80-300 m, mainly in ground burrows and rock crevices. At sea it feeds on cephalopods and fish. After breeding it moves mainly to the South and West Atlantic.
An extinction-risk assessment has not been added yet.