Attributes / relations provided by
♦ 1Kattge, J. et al. (2011b)
TRY - a global database of plant traits Global Change Biology 17:2905-2935
♦ 2USDA Plants Database, U. S. Department of Agriculture
♦ 3Waltman, JR, and SR Beissinger. 1992.
Breeding behavior of the green-rumped parrotlet Wilson Bulletin 104:65-84
♦ 4Garnett, S.T. and Crowley, G.M. 2002.
Recovery Plan for the golden-shouldered parrot Psephotus chrysopterygius 2003-2007. Report to Environment Australia, Canberra. Queensland Parks and Wildlife Service, Brisbane.
♦ 5Red Siskin, BirdLife International (1992) Threatened Birds of the Americas. Cambridge, UK: BirdLife International.