Thin-billed prion
The slender-billed prion (Pachyptila belcheri ) or thin-billed prion, is a species of petrel, a seabird in the family Procellariidae. It is found in the southern oceans.
Like all prions, they are blue-grey above and white below with a dark "M" on their back to their wingtips. They have a white eyebrow and a dark line extending from below the eye almost to the neck. Their tail is wedge-shaped and grey with a black tip, their bill is blue-grey, and their feet are pale blue.
The slender-billed prion spends all their non-breeding time over ocean water in the southern oceans. When breeding, they will do so on the Crozet Islands, the Kerguelen Islands, the Falkland islands and Noir Island off the coast of southern Chile.
Like all prions, the slender-billed eat zooplankton, by filtering it through their bill.
They are annual breeders and will lay one egg. Both parents will then incubate the egg and care for the young until they fledge.