• [Wiki] http://en.wikipedia.org/wiki/Larus_crassirostris.
• [avibase] https://avibase.bsc-eoc.org/species.jsp?lang=EN&avibaseid=8C4CE60F3DA7955C&sec=lifehistory.
• [IsekWata2002] Iseki, K. and Watanuki, Y. (2002). Effects of brood size on chick growth and survival in early and late breeding black-tailed gulls in two years of different environmental conditions. Japanese Journal of Ornithology, 51(2):108--115. doi:10.3838/jjo.51.108.
• [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.