 Petrels in the genus "Procellaria" are larger and have a less bounding flight.The great-winged petrel breeds in the Southern Hemisphere between 30 and 50 degrees south with colonies on Tristan da Cunha, Gough Island, the Crozet Islands, the Prince Edward Islands, the Kerguelen Islands and on the coasts of southern Australia.It is a rare vagrant to the Pacific Ocean off the coast of California, United States.