One of the rarest seabirds in the world, endemic to the Chatham Islands. Medium-sized bird with a distinctive dark gray head, neck, and upper breast and a gray chin. The rest of the underside is white with a light gray underwing. During breeding, the birds mainly forage south and east of their colonies, venturing across the Pacific Ocean to South American and tropical seas in the winter. Many petrel species can appear similar to the Magenta Petrel but can be ruled out if they appear partially hooded, show traces of an “M” across their back, or are found outside of the Chatham Island range during breeding season.