de Kloet, RS; SR, de Kloet (2005). „The evolution of the spindlin gene in birds: Sequence analysis of an intron of the spindlin W and Z gene reveals four major divisions of the Psittaciformes”. Molecular Phylogenetics and Evolution. 36 (3): 706—21. PMID16099384. doi:10.1016/j.ympev.2005.03.013.
Tokita M, Kiyoshi T, Armstrong KN (2007). „Evolution of craniofacial novelty in parrots through developmental modularity and heterochrony”. Evolution & Development. 9 (6): 590—601. PMID17976055. doi:10.1111/j.1525-142X.2007.00199.x.
Schweizer M, Seehausen O, Güntert M, Hertwig ST (2010). „The evolutionary diversification of parrots supports a taxon pulse model with multiple trans-oceanic dispersal events and local radiations”. Molecular Phylogenetics and Evolution. 54 (3): 984—994. PMID19699808. doi:10.1016/j.ympev.2009.08.021.
Schweizer, Manuel; Seehausen, Ole; Hertwig, Stefan T. (2011). „Macroevolutionary patterns in the diversification of parrots: effects of climate change, geological events and key innovations”. Journal of Biogeography. 38 (11): 2176—2194. doi:10.1111/j.1365-2699.2011.02555.x.
Joseph, Leo; Toon, Alicia; Schirtzinger, Erin E.; 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 Evolution. 59 (3): 675—684. PMID21453777. doi:10.1016/j.ympev.2011.03.017.
de Kloet, RS; SR, de Kloet (2005). „The evolution of the spindlin gene in birds: Sequence analysis of an intron of the spindlin W and Z gene reveals four major divisions of the Psittaciformes”. Molecular Phylogenetics and Evolution. 36 (3): 706—21. PMID16099384. doi:10.1016/j.ympev.2005.03.013.
Tokita M, Kiyoshi T, Armstrong KN (2007). „Evolution of craniofacial novelty in parrots through developmental modularity and heterochrony”. Evolution & Development. 9 (6): 590—601. PMID17976055. doi:10.1111/j.1525-142X.2007.00199.x.
Schweizer M, Seehausen O, Güntert M, Hertwig ST (2010). „The evolutionary diversification of parrots supports a taxon pulse model with multiple trans-oceanic dispersal events and local radiations”. Molecular Phylogenetics and Evolution. 54 (3): 984—994. PMID19699808. doi:10.1016/j.ympev.2009.08.021.
Joseph, Leo; Toon, Alicia; Schirtzinger, Erin E.; 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 Evolution. 59 (3): 675—684. PMID21453777. doi:10.1016/j.ympev.2011.03.017.