Birds of North and Middle America, descriptive catalogue of higher groups, genera, species, and subspecies of birds known to occur in North America, from Arctic lands to Isthmus of Panama, West Indies and other islands of Caribbean Sea, and Galapagos Archipelago : Part VI, families Picidae (woodpeckers), Capitonidae (barbets), Ramphastidae (toucans), Bucconidae (puff birds), Galbulidae (jacamars), Alcedinidae (kingfishers), Todidae (todies), Momotidae (motmots), Caprimulgidae (goatsuckers), Nyctibiidae (potoos), Tytonidae (barn owls), Bubonidae (eared owls).