Cory 1918. Catalogue of Birds of the Americas and the adjacent islands etc. Part ii, no. i. Families Bubonidae Tytonidae, Psittacidae, Steatornithidae, Alcedinidae, Todidae, Momotidae, Nyctibiidae, Caprimulgidae, Cypselidae, Trochilidae. Chicago Ill. Field Museum Publications Chicago Zoological Series, 13 1918: (1-315)