Antarctic prion

The Antarctic prion (Pachyptila desolata) also known as the dove prion, or totorore in Māori, is the largest of the prions, a genus of small petrels of the Southern Ocean.

The Antarctic prion has an overall length of 27 cm (11 in), a wingspan of 61–66 cm (24–26 in) and weighs 150–160 g (5.3–5.6 oz).

Like all prions, its underparts are white and upperparts are blue-grey, with a dark "M" across its back to its wingtips. It has a white eyebrow, blue-grey bill, and blue feet. It also has a grey wedge-shaped tail with a black tip. On its wings, its greater coverts are near black. It is so similar in appearance to Salvin's prion that the two species cannot be distinguished at sea.