• [Wiki] http://en.wikipedia.org/wiki/Pandion_haliaetus.
• [AnAge] https://genomics.senescence.info/species/entry.php?species=Pandion_haliaetus.
• [avibase] https://avibase.bsc-eoc.org/species.jsp?lang=EN&avibaseid=5BCF1891777ED3D3&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.
• [SchaBird1993] Schaadt, C. P. and Bird, D. M. (1993). Sex-specific growth in ospreys: The role of sexual size dimorphism. The Auk, 110(4):900--910.
• [Steg2022] Steggles, M. A. (2022). https://maryannsteggles.com/tag/development-of-osprey-nestling/.