species is found because intraspecific competition usually prevents other closely related species from overlapping. Behaviour The hanging parrot can be observed travelling alone, in pairs, or in parties of 150 individuals in the canopy. During the mating season, bonded pairs will remain together and the male will chase off any other male that approaches. Characteristic of hanging parrots, the blue-crowned hanging parrot sleeps upside down by hanging from tree branches. The birds climb or fly up tall trees and will hang by either both feet or only one foot and will fluff their feathers and tuck their head and neck into their body. This behaviour evolved in order to limit nighttime predation. The parrot's green plumage and hanging sleeping position imitates leaves among trees to camouflage themselves among the foliage. This behaviour was likely evolved from a common ancestor of Loriculus and Agapornis parrots endemic to Africa. Young and sick birds are unable to hang and will perch sitting upright to sleep with their head turned to one side while tucked into the back feathers. Young birds have undeveloped modifications necessary for hanging but develop these rapidly as they fledge. Breeding The blue-crowned hanging parrot forms bonded pairs during January to July for the breeding season. In order to court a female, the male will display by strutting; where the red rump, tail coverts, and red throat feathers are fluffed up. The male will erect his body and spread his tail and bob his head while running across a branch or perch. With wings held low, he makes soft twittery “jeet jeet” call while showing off his red and gold rump on his lower back to nearby females. In response, a female who is not impressed by the male will react aggressively by chasing him away, or she may act indifferently. If the female is interested in the male, she will actively encourage him and accept food from him. The pair's bond is maintained in this species through courtship feeding where the male will regurgitate food and offer it to a female. The female who accepts the food will perch close to the male and they then spend most of their time together. The parrots will carry nesting material in their contour feathers by tucking them with their beaks. The nests are built by the bird in natural cavities like open tree branches and made out of substrate like bark