This section is from the book "The Bird Book", by Chester A. Reed. Also available from Amazon: The Bird Book.
A small species (length about 7.5 inches) inhabiting southern seas. Recorded once at Florida. General plumage blackish. Upper tail coverts, bases of tail feathers, under wing coverts, and abdomen, white.
Wilson's Petrel. White-bellied Petrel. White-faced Petrel.