Despite their popularity, little has been written about the natural behavior of parrots so far. This book fills that gap and summarizes the current knowledge about the behavior of this group of birds in the wild and in captivity in an easily understandable way. The functions of many behaviors in both intra- and interspecies contexts are explained. Additional chapters on the behavioral ecology and behavioral disorders of parrots, from the small budgerigar to the giant macaw in human care, complete the book.