Range. - Southern seas, accidentally north to the coast of Massachusetts. This beautiful species is of about the same size as the Leach's Petrel. It has bluish gray upper parts; the whole under parts, as well as the forehead and sides of head, are white.
Wilson's Petrel. White-bellied Petrel. White-faced Petrel.
These birds have the same characteristics as do others of the species, pattering over the water with their feet as they skim over the crests and troughs of the waves. They are not uncommon in the waters about New Zealand where they breed. Their single eggs are about the same as Leach's Petrel, are brilliant white and are, very strongly, for a Petrel egg, wreathed about the large end with dots of reddish brown. Size 1.32 x .90. Data. - Chatham Is., New Zealand, January 7, 1901. Egg laid at end of a burrow. Collector, J. Lobb. This egg is in Mr. Thayer's collection.