Pitt Island shag  (Phalacrocorax featherstoni)

The Pitt Island shag has two head crests, which distinguishes it from the cormorants, one on the forehead and the other on the crown. During the breeding season these are upright and resemble a Mohican, but during the winter season and in non-breeding birds they lie flat. Breeders have a black head, rump, tail and thighs and dark grey back and wings with small black spots. The underparts are lighter grey and the bare facial skin is green. Non-breeders have paler underparts and the facial skin fades temporarily to yellow. The female is silent, but the male is noisy, particularly when displaying (2).