The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.
- Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes. 2003. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada
- Banks, R. C., R. W. McDiarmid, and A. L. Gardner. 1987. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada. Resource Publication, no. 166. 79
- Burtt EH, Jr; Schroeder MR; Smith LA; Sroka JE; McGraw KJ. 2011. Colourful parrot feathers resist bacterial degradation. Biology Letters. 7: 214-216.
- WoRMS (2014). Psittaciformes. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=196030
- leGay J. Brereton and K. Immelmann, “Head-scratching in the Psittaciformes”, Ibis, vol. 104, pp. 169 - 174, 1962.
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