Islands, sandy or rocky
Monogamous, Colonial, Mates for life
Casual
White
Both sexes
No material added to nest.
Migratory
Wedge-rumped Storm-Petrel: Small storm-petrel, black-brown overall with large white patch on rump and central tail. Sexes are similar.
Wedge-rumped Storm-Petrel: Breeds on Galapagos Islands and islands off the coast of Peru. In fall and winter is casual off the Pacific Coast north to the central California coast.
Wedge-rumped Storm-Petrel: A single white egg is laid in a rock crevice or burrow under a shrub. Incubation ranges from 41 to 42 days and is carried out by both parents.
Wedge-rumped Storm-Petrel: Eats mollusks, small crustaceans, plankton, and small fish. Usually feeds far out at sea, swooping down to snatch food from the surface.
Wedge-rumped Storm-Petrel: Silent at sea. On breeding grounds gives soft growling calls.
Wedge-rumped Storm-Petrel: Wilson's Storm-Petrel is larger with yellow feet and U-shaped rump patch that reaches only the middle of black tail.