• [Wiki] http://en.wikipedia.org/wiki/Pygoscelis_adeliae.
  • [ADW] http://animaldiversity.ummz.umich.edu/accounts/Pygoscelis_papua/.
  • [AnAge] http://genomics.senescence.info/species/entry.php?species=Pygoscelis_papua.
  • [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
  • [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.
  • [VolkTriv1980] Volkman, N. J. and Trivelpiece, W. (1980). Growth in pygoscelid penguin chicks. J. Zool. Lond., 191:521--530.