• [Wiki] http://en.wikipedia.org/wiki/Branta_bernicla.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Branta_bernicla.
• [avibase] https://avibase.bsc-eoc.org/species.jsp?lang=EN&avibaseid=9A60617EE376ABE9&sec=lifehistory.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [LeweWard2020] Lewis, T. L., Ward, D. H., Sedinger, J. S., Reed, A., Derksen, D. V., Carboneras, C., Christie, D. A., and Kirwan, G. M. (2020). Brant (Branta bernicla), version 1.0. in birds of the world (s. m. billerman, editor). cornell lab of ornithology, ithaca, ny, usa. doi:10.2173/bow.brant.01.
• [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.