• [Wiki] http://en.wikipedia.org/wiki/Sagittarius_serpentarius.
  • [EoL] http://eol.org/pages/1049539/overview.
  • [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.
  • [Todd1988] Todd, W. T. (1988). Hand-rearing the secretary bird Sagittarius serpentarius at {Oklahoma City Zoo}. Int. Zoo Yb., 27:258--263.