The White-necked Petrel is a large seabird marked by a white collar and black cap. It feeds mainly on squid at sea and migrates to the North Pacific.
Its plumage is gray and white, with a white band across the hindneck and a black cap extending below the eyes.
At sea it feeds mainly on squid and migrates to the tropical and subtropical North Pacific outside the breeding period.
An extinction-risk assessment has not been added yet.