Boehrer, Bruce (2010). Parrot Culture: Our 2500-Year-Long Fascination with the World's Most Talkative Bird. U. Penn. Press.
Schweizer, M.; et al. (Mar 2010). "The evolutionary diversification of parrots supports a taxon pulse model with multiple trans-oceanic dispersal events and local radiations.". Mol Phylogenet Evol. 54 (3): 984–94. doi:10.1016/j.ympev.2009.08.021. PMID 19699808.
