Parrots are birds of the roughly 372 species in 86 genera that make up the order Psittaciformes, found in most tropical and subtropical regions. The order is subdivided into three superfamilies: the Psittacoidea (‘true’ parrots), the Cacatuoidea (cockatoos) and the Strigopoidea (New Zealand parrots).Parrots have a generally pantropical distribution with several species inhabiting temperate regions in the Southern Hemisphere as well. The greatest diversity of parrots is found in South America and Australasia.
Figure 1 | Evolution of vocal learning in birds. [velociraptorise]