A medium-sized seabird with long wings, the Galapagos petrel is greyish-black across the upperparts, and white on the forehead and underside. The underwings are edged with black and the legs are pink. The feet are also pink, and have black webbing. The black bill is short and hooked, and like all species of petrel, has tubular nostrils that are united at the top. The tail is wedge-shaped and white in colour (3).