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

@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{CaldCorn1975,
 author = {Caldwell, Patrick J. and Cornwell, George W.},
 year = {1975},
 title = {Incubation Behavior and Temperatures of the Mallard Duck},
 journal = {The Auk},
 volume = {92 (4)},
 pages = {706--731}
} 

@Article{CaldSnar1974,
 author = {Caldwell, Patrick J. and Snart, Allen E.},
 year = {1974},
 title = {A Photographic Index for Aging Mallard Embryos},
 journal = {The Journal of Wildlife Management},
 volume = {38 (2)},
 pages = {298--301}
} 

@Book{CramSimm1977,
 author = {Cramp, S. and Simmons, K. E. L.},
 year = {1977},
 title = {Ostrich to Ducks.},
 sereis = {Handbook of the Birds of Europe, the Middle East and North Africa, The Birds of the Western Palearctic},
 publisher = {Oxford University Press} ,address = {Oxford} , volume = {I}
} 

@Article{MagaCost2009,
 author = {de Magalhaes, J. P. and Costa, J.},
 year = {2009},
 title = {A database of vertebrate longevity records and their relation to other life-history traits.},
 journal = {Journal of Evolutionary Biology},
 volume = {22},
 pages = {1770--1774}
} 

@Article{LokeJohn1990,
 author = {Lokemoen, J. T. and Johnson, D. H. and Sharp, D. E.},
 year = {1990},
 title = {Weights of wild mallard Anas platyrhynchos, gadwall A. strepera, and blue-winged teal A. discors during the breeding season.},
 journal = {Wildfowl},
 volume = {41},
 pages = {122--130}
} 

@Article{Prin1969,
 author = {Prince, Harold H.  and Siegel, P. B. and Cornwell, George W.},
 year = {1969},
 title = {Incubation Environment and the Development of Mallard Embryos},
 journal = {The Journal of Wildlife Management},
 volume = {33 (3)},
 pages = {589--595}
} 

@Book{Rudo1978,
 author = {Rudolph, W.},
 year = {1978},
 title = {Die Hausenten},
 publisher = {A. Ziemsen-Verlag},
 address = {Wittenberg Lutherstadt}
} 

@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{KrapDoty1979,
 author = {Krapu, Gary L. and Doty, Harold A.},
 year = {1979},
 title = {Age-related aspects of Mallard reproduction},
 journal = {Wildfowl},
 volume = {30},
 pages = {35--39}
} 

@Misc{avibase,
 howpublished = {\url{https://avibase.bsc-eoc.org/species.jsp?lang=EN&avibaseid=85625D75F2524457&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}
}