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

@Book{Kooy2010,
 author = {Kooijman, S.A.L.M.},
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 title  = {Dynamic Energy Budget theory for metabolic organisation},
 publisher = {Cambridge Univ. Press, Cambridge},
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 howpublished = {\url{../../../bib/Kooy2010.html}}
} 

@Misc{HenrGehl2020,
 doi = {10.2173/bow.elfowl.01},
 author = {Henry, S. G. and F. R. Gehlbach and D. Molfetto and P. Howard},
 year = {2020},
 title = {Elf Owl (\emph{Micrathene whitneyi}), version 1.0. In Birds of the World (S. M. Billerman, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA}
} 

@Misc{avibase,
 howpublished = {\url{https://avibase.bsc-eoc.org/species.jsp?lang=EN&avibaseid=D74BA9655224E5AE&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},
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 volume = {99A(4)},
 pages = {499-506}
} 

@techreport{Ligo1968,
 author = {J. David Ligon},
 year = {1968},
 title = {The Biology of the Elf Owl, \emph{Micrathene whitneyi}},
 institution = {MISCELLANEOUS PUBLICATIONS MUSEUM OF ZOOLOGY, UNIVERSITY OF MICHIGAN},
 volume = {136}
}