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

@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}}
} 

@article{Stey1973,
 doi = {10.1080/00306525.1973.9632611},
 author = {Steyn, P.},
 year = {1973},
 title = {OBSERVATIONS ON THE TAWNY EAGLE},
 journal = {Ostrich},
 volume = {44(1)},
 pages = {1–22}
} 

@Misc{KempKirw2020,
 doi = {10.2173/bow.taweag1.01},
 author = {Kemp, A. C. and G. M. Kirwan},
 year = {2020},
 title = {Tawny Eagle (\emph{Aquila rapax}), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA}
} 

@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{AnAge,
 howpublished = {\url{https://genomics.senescence.info/species/entry.php?species=Aquila_rapax}}
}