• [Wiki] http://en.wikipedia.org/wiki/Asio_otus.
  • [AnAge] http://genomics.senescence.info/species/entry.php?species=Asio_otus.
  • [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.
  • [SeidFloc2006] Seidensticker, M. T., Flockhart, D. T. T., Holt, D. W., and Gray, K. (2006). Growth and plumage development of nestling long-eared owls. The Condor, 108:981--985.