Inter proprietates Psittaciformium sunt firmum rostrum crassum et curvum, status erectus, crura valida, et pedesungulatizygodactyles. Multi psittaciformes sunt versicolores, nonnullisque sunt multi colores. Plurimi paucum vel nullum dimorphismum sexualem exhibent. Omnes una sunt ordo avium magnitudine maxime variabilis.
Elementa maximi momenti in victus rationibus plurimorum psittaciformium sunt semina, nuces, fructus, gemmae, et alia res plantarum. Nonnullae speciesanimalia et cadavera aliquando edunt, et psittaciformes tribusLoriinorumnectareflorum et fructibus vescuntur. Paene omnes psittaciformes feri nidos in cavis arboris faciunt et ovaalba pariunt, ex quibus excludunt iuvenes altriciales.
Psittaciformes, cum Corvidis, sunt inter aves maxime intellegens, et facultas vocum humanarum imitandarum nonnullarum specierum facit ut eae animalia dilecta populo gratiores sint.
Systematica
Classificatio sequens in proposito recentissimo, quod vicissim in omnibus inventis recentibus conditur.[3][4][5][6][7]
White, Nicole E. et al.(2011)."The evolutionary history of cockatoos (Aves: Psittaciformes: Cacatuidae)".Molecular Phylogenetics and Evolution59(3): 615–22.
Schweizer, Manuel; Seehausen, Ole and Hertwig, Stefan T.(2011)."Macroevolutionary patterns in the diversification of parrots: effects of climate change, geological events and key innovations".Journal of Biogeography38(11): 2176–94.
Joseph, Leo; Toon, Alicia; Schirtzinger, Erin E. and Wright, Timothy F.(2011)."Molecular systematics of two enigmatic genera Psittacella and Pezoporus illuminate the ecological radiation of Australo-Papuan parrots (Aves: Psittaciformes)".Molecular Phylogenetics and Evolution59(3): 675–684.
Schweizer,M.;Seehausen O, Güntert M and Hertwig ST(2009)."The evolutionary diversification of parrots supports a taxon pulse model with multiple trans-oceanic dispersal events and local radiations".Molecular Phylogenetics and Evolution54(3): 984–94.
Hochspringen, T. F., Wright, E. E. Schirtzinger, T. Matsumoto, J. R. Eberhard, G. R. Graves, J. J. Sanchez, S. Capelli, H. Müller, J. Scharpegge, G. K. Chambers, et R. C. Fleischer. A Multilocus Molecular Phylogeny of the Parrots (Psittaciformes): Support for a Gondwanan Origin during the Cretaceous. Molecular Biology and Evolution.doi:10.1093/molbev/msn160.
Rowley, Ian. 1997. Family Psittacidae. In Handbook of the Birds of the World, vol. 4, Sandgrouse to Cuckoos, ed. Josep del Hoyo, Andrew Elliott, et Jordi Sargatal, 246–69. Barcinonae: Lynx Edicions. ISBN 9788487334221.