Parrotlets are a group of the smallest New World parrot species, comprising several genera, namely Forpus, Nannopsittaca, and Touit. They have stocky builds and short tails and are endemic to Middle and South America. In the wild, parrotlets travel in flocks ranging in size from about four to over a hundred birds. Most species travel in flocks of about five to forty. They form lifelong, tight pair bonds with their chosen mates. Parrotlets are the smallest parrot species commonly bred in captivity. The genus Forpus, particularly the celestial or Pacific parrotlet, is growing in availability and popularity in aviculture due to their size .