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

@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}}
} 

@Book{SnowPerr1998,
 author = {Snow, D. W. and Perrins, C. M.},
 year = {1998},
 title = {The Birds of the Western Palearctic, Concise Edition},
 publisher = {Oxford University Press},
 address = {Oxford}
} 

@Article{TacuCrai2013,
 author = {Tacutu, R. and Craig, T. and Budovsky, A. and Wuttke, D. and Lehmann, G. and Taranukha, D. and Costa, J. and Fraifeld, V. E. and de Magalh\~{a}es, J. P.},
 year = {2013},
 title = {Human Ageing Genomic Resources: Integrated databases and tools for the biology and genetics of ageing},
 journal = {Nucleic Acids Research},
 volume = {41},
 pages = {D1027--D1033}
} 

@Incollection{Cram1988,
 author = {Cramp, S.},
 year = {1988},
 title = {Tyrant Flycatchers to Thrushes},
 booktitle = {Handbook of the Birds of Europe, the Middle East and North Africa, The Birds of the Western Palearctic},
 volume = {V},
 publisher = {Oxford University Press},
 address = {Oxford}
} 

@Book{Weit1983,
 author = {Weitnauer, E.},
 year = {1983},
 title = {Mein Vogel - Aus dem Leben des Mauerseglers (\emph{Apus apus})},
 publisher = {Oltingen},
 address = {Sissach}
} 

@Article{BryaHail1983,
 author = {Bryant, D. M. and Hails, C. J.},
 year = {1983},
 title = {Energetics and growth patterns of three tropical bird species},
 journal = {The Auk},
 volume = {100},
 pages = {425--439}
} 

@Incollection{GlutBaue1994,
 author = {Glutz von Blotzheim, U. N. and Bauer, K. M.},
 year = {1994},
 title = {Columbiformes - {P}iciformes},
 booktitle = {Handbuch der V\"{o}gel Mitteleuropas},
 volume = {9},
 publisher = {Aula-Verlag},
 address = {Wiesbaden}
} 

@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}
}