Social play in kakapo (Strigops habroptilus) with comparisons to kea (Nestor notabilis) and kaka (Nestor meridionalis)
Authors: Diamond, Judy; Eason, Daryl; Reid, Clio; Bond, Alan B.
Source: Behaviour, Volume 143, Number 11, 2006 , pp. 1397-1423(27)
Abstract:The play behaviour of the critically endangered kakapo (Strigops habroptilus; Aves: Psittaciformes: Psittacidae) is here compared to that of its closest relatives, the kea (Nestor notabilis) and the kaka (Nestor meridionalis). Contrasting kakapos, which are relatively solitary, with the more social Nestor parrots provides an attractive test of the relative contributions of phylogeny and sociality to the evolution of play. Overlapping cluster analysis of play sequences using a hypergeometric similarity metric indicated that kakapo play is generally less complex, lacking the intensity, duration, structure, and reciprocity of play in the Nestor parrots. Kakapos have a later age of first reproduction than the comparison species, but they lack the well-developed social interactions between post-fledging young and adults that are characteristic of keas and kakas. Social play in parrots appears to be most readily predicted from their patterns of social development, emerging within a constellation of behaviours associated with independent young that remain in the vicinity of adult groups.
Document Type: Research article
Publication date: 2006-11-01