Fairy prion

The fairy prion (Pachyptila turtur) is a small seabird with the standard prion plumage of blue-grey upperparts with a prominent dark "M" marking and white underneath. The sexes are alike. It is a small prion which frequents the low subantarctic and subtropic seas.

The fairy prion is around 25 cm (9.8 in) in length, with a wingspan of 56 cm (22 in). The plumage is blue-grey on its upperparts with a dark "M" extending to the wingtips. The tail is wedge-shaped with a dark tip. The underparts are mostly white. It has a pale blue bill with blue legs and feet. The sexes are alike. In appearance, it is very similar to the fulmar prion (Pachyptila crassirostris), and the two species cannot be distinguished at sea.