• [Wiki] https://en.wikipedia.org/wiki/Atlantic_puffin.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Fratercula_arctica.
• [EoL] http://eol.org/pages/1049982/details.
• [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.
• [WillKita2008] Williams, C. T., Kitaysky, A. S., Kettle, A. B., and Buck, C. L. (2008). Corticosterone levels of tufted puffins vary with breeding stage, body condition index, and reproductive performance. General and Comparative Endocrinology, 158:29--35.