• [Wiki] http://en.wikipedia.org/wiki/Fregata_aquila.
• [avibase] https://avibase.bsc-eoc.org/species.jsp?lang=EN&avibaseid=00E090F87F64DBDB&sec=lifehistory.
• [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.
• [StonSton1963] Stonehouse, B. and Stonehouse, S. (1963). The frigate bird Fregata aquila of Ascension Island. Ibis, 103b(3):409–422. doi:10.1111/j.1474-919x.1963.tb06763.x.