@Misc{Wiki,
 howpublished = {\url{http://en.wikipedia.org/wiki/Mareca_americana}}
} 

@Book{Kooy2010,
 author = {Kooijman, S.A.L.M.},
 year = {2010},
 title  = {Dynamic Energy Budget theory for metabolic organisation},
 publisher = {Cambridge Univ. Press, Cambridge},
 pages = {Table 4.2 (page 150), 8.1 (page 300)},
 howpublished = {\url{../../../bib/Kooy2010.html}}
} 

@Misc{AnAge,
 howpublished = {\url{http://genomics.senescence.info/species/entry.php?species=Anas_platyrhynchos_diazi}}
} 

@Misc{avibase,
 howpublished = {\urlhttps://avibase.bsc-eoc.org/species.jsp?lang=EN&avibaseid=42CF45FEA3D6D52F&sec=lifehistory}}
} 

@Article{PrinPres1991,
 doi = {10.1016/0300-9629(91)90122-S},
 author = {R. Prinzinger and A.Pre{\ss}mar and E. Schleucher},
 year = {1991},
 title = {Body temperature in birds},
 journal = {Comp. Biochem. Physiol.},
 volume = {99A(4)},
 pages = {499-506}
} 

@Misc{DrilWill2020,
 doi = {10.2173/bow.mexduc.01},
 author = {Drilling, N. and S. O. Williams III and R. D. Titman and and F. McKinney},
 year = {2020},
 title = {Mexican Duck (\emph{Anas diazi})},
 howpublished = {version 1.0. In Birds of the World (P. G. Rodewald and B. K. Keeney, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA}
}