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

@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=Motacilla_flava}}
} 

@Article{Scib2004,
 doi = {10.1007/s10336-003-0006-5},
 author = {M. \'{S}ciborska},
 year = {2004},
 title = {Breeding biology of the citrine wagtail (\emph{Motacilla citreola}) in the {G}dansk region ({N} {P}oland)},
 journal = {J Ornithol},
 volume = {145},
 pages = {41-47}
} 

@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}
}