High Quality Content by WIKIPEDIA articles! The Zino`s Petrel or Freira, Pterodroma madeira, is a small seabird in the gadfly petrel genus which is endemic to the island of Madeira. This long-winged petrel has a grey back and wings, with a dark "W" marking across the wings, and a grey upper tail. The undersides of the wings are blackish apart from a triangle of white at the front edge near the body, and the belly is white with grey flanks. It is very similar in appearance to the slightly larger Fea`s Petrel, and separating these two Macaronesian species at sea is very challenging. Zino`s was formerly considered to be a subspecies of the Soft-plumaged Petrel, P. mollis, but they are not closely related, and Zino`s was raised to species status because of differences in morphology, calls, breeding behaviour and mitochondrial DNA. It is Europe`s most endangered seabird, restricted to a few ledges high in the central mountains of Madeira.