Trindade Petrel, Pterodroma arminjoniana, is a rarity off the Carolina coast, it appears in various morphs from light to dark (shown).It breeds on isolated islands in Atlantic (Trinidad and Martin Vaz). Might be confused with the Sooty Shearwater, Puffinus griseus, which has less crooked wings as well as a longer bill
There is a disjunct population in the Indian and Pacific Ocean which has been considered a race of this species but it is often considered a seperate species, Herald Petrel, Pterodroma heraldica.
