Heinsohn, Robert; Murphy, Stephen; Legge, Sarah (2003). "Overlap and competition for nest holes among eclectus parrots, palm cockatoos and sulphur-crested cockatoos". Australian Journal of Zoology. 51 (1): 81–94. doi:10.1071/ZO02003. S2CID83711585.
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Raidal, S.; McElnea, C.; Cross, G. (1993). "Seroprevalence of psittacine beak and feather disease in wild psittacine birds in New South Wales". Australian Veterinary Journal. 70 (4): 137–139. doi:10.1111/j.1751-0813.1993.tb06105.x. PMID8494522.
Heinsohn, Robert; Murphy, Stephen; Legge, Sarah (2003). "Overlap and competition for nest holes among eclectus parrots, palm cockatoos and sulphur-crested cockatoos". Australian Journal of Zoology. 51 (1): 81–94. doi:10.1071/ZO02003. S2CID83711585.