We’ve categorised the birds in four groups based on size. This is useful when talking in terms of space requirements.
Although long, the following lists (covering small, medium-sized, large and extra large parrots) are far from exhaustive. All the birds mentioned here are popular as pets in Europe, North America, Australia and elsewhere, and all are readily available to would-be owners.
Note, however, that species such as the African Grey, in spite of thriving populations in zoos and aviaries around the world, are endangered in the wild, and you will need a license to keep them. (See Parrots on the CITES List, in the Choosing a Parrot section of this guide).