• [Wiki] http://en.wikipedia.org/wiki/Chionis_albus.
• [avibase] https://avibase.bsc-eoc.org/species.jsp?lang=EN&avibaseid=62AC9C19E209962D&sec=lifehistory.
• [Jone1963] Jones, N. V. (1963). The sheathbill, Chionis alba, at Signy Island, South Orkney Islands. British Antarctic Survey Bulletin, 2:53--71.
• [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.