• [Wiki] http://en.wikipedia.org/wiki/Hypopyrrhus_pyrohypogaster.
  • [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
  • [OcamEstr2012] Ocampo, D., Estrada-F, M. C., Muñoz, J. M., Londoño, L. V., David, S., Valencia, G., Morales, P. A., Bal, J. A. G., and Cuervo, A. S. M. (2012). Breeding biology of the red-bellied grackle (Hypopyrrhus pyrohypogaster): A cooperative breeder of the Colombian Andes. The Wilson Journal of Ornithology, 124:538--546. doi:10.1676/11-117.1.
  • [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.