Salvin's prion
ā¦salvini), also known as the medium-billed prion, is a species of seabird in the petrel family Procellariidae. Salvin's prion is a member of the genus Pachyptila and of the subgenus Salviprion Mathews, 1943. Along with the blue petrel, they make up the prions. They in turn are members of the family Procellariidaeā¦