• [Wiki] http://en.wikipedia.org/wiki/Mareca_americana.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Anas_americana.
• [avibase] urlhttps://avibase.bsc-eoc.org/species.jsp?lang=EN&avibaseid=D201EB7230F20770&sec=lifehistory.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [MiniHarr2020] Mini, A. E., Harrington, E. R., Rucker, E., Dugger, B. D., and Mowbray, T. B. (2020). American wigeon (Mareca americana), version 1.0. in birds of the world (a. f. poole, editor). cornell lab of ornithology, ithaca, ny, usa. doi:10.2173/bow.amewig.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.