 Quoy and Gairmard described "nigra" from a living specimen, but no evidence indicates they knew of its accurate provenance within the Galápagos – the locality was in fact given as California.Garman proposed the linking of "nigra" with the extinct Floreana species.Later, Pritchard deemed it convenient to accept this designation, despite its tenuousness, for minimal disruption to the already confused nomenclature of the species.