Spectacled Guillemot - This species is about 38 cm long, with red legs, black bill and a blackish iris.
Pigeon Guillemot - Adult birds have black bodies with a white wing patch broken by a black wedge, a thin dark bill and red legs and feet. They are similar in appearance to the Black Guillemot but show dark wing linings in flight. In winter, the upper parts are mottled grey and black and the underparts are white. They walk well and habitually have an upright posture.
Black Guillemot - Adult birds have black bodies with a white wing patch, a thin dark bill and red legs and feet. They show white wing linings in flight. In winter, the upperparts are pale grey and the underparts are white. The wings remain black with the large white patch on the inner wing.