
Parrots are popular pets, but this popularity comes with a steep price. They are amongst the most threatened group of birds (ref), and they are amongst the most frequently traded birds that are listed as threatened by the Convention on International Trade in Endangered Species (CITES) (ref). The pet trade alone has driven international movements of more than 19 million parrots since 1975 (ref). Predictably, some of these parrots escape or are released into the wild, and sometimes, these introduced parrots establish breeding populations, often to the delight of local residents.