• [Wiki] http://en.wikipedia.org/wiki/Nymphicus_hollandicus.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Nymphicus_hollandicus.
• [avibase] https://avibase.bsc-eoc.org/species.jsp?lang=EN&avibaseid=FDAEA60A5681B51F&sec=lifehistory.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [Pear1998] Pearson, J. T. (1998). Development of thermoregulation and posthatching growth in the altricial cockatiel Nymphicus hollandicus. Physiological Zoology, 71(2):237--244.
• [PrinPres1991] Prinzinger, R., A.Preßmar, and Schleucher, E. (1991). Body temperature in birds. Comp. Biochem. Physiol., 99A(4):499--506. doi:10.1016/0300-9629(91)90122-S.