• [Wiki] http://en.wikipedia.org/wiki/Melopsittacus_undulatus.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Melopsittacus_undulatus.
• [Buch1983] Bucher, T. L. (1983). Parrot eggs, embryos, and nestlings: Patterns and energetics of growth and development. Physiological Zoology, 56(3):465–483. doi:10.1086/physzool.56.3.30152612.
• [EarlClar1991] Earle, K. E. and Clarke, N. R. (1991). The nutrition of the budgerigar (Melopsittacus undulatus). Journal of Nutrition, pages S186--S192.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.