A large bird of prey with a dark grey back and a white head, white chest and white belly. Their legs are also white and have long black talons. They have dark eyes and a light-coloured, hooked beak. When viewed in flight, the undersides of the wings are a distinctive half white and half grey-brown.

First-year juveniles have a buffish and ‘spiky’ head, contrasting with patchy cream and dark brown body and wings; underwing pattern also patchy, but note half-moon at base of tail feathers. Older juveniles have a pale buff-grey tail.

Their nests are massive, made of sticks and branches, usually found in a tall living tree near water or on a remote coastal cliff (on ground if on an island).

Distinctive feature

A wedge-shaped tail, distinctive when seen in flight.

Mostly light blue-grey in colour. The forehead, crown, chin and upper throat are white. It has a long, slim neck and a pointed grey-black bill. The legs are long and dull yellow in colour. Easily identifiable when seen from below with the dark flight feathers of the wing contrasting with the paler grey plumage.

Males and females are similar. When breeding, the birds have long feathers (nuptial plumes) on the head, neck and back. Young are similar in appearance to non-breeding adults, with little to no white on the face; underparts often have a reddish colour.

Distinctive feature

Its characteristic white face.