@Misc{Wiki,
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note = {Accessed : 2017-03-20}
} 

@Book{Kooy2010,
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} 

@Article{Vlec1981,
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 year = {1981},
 title = {Hummingbird Incubation: Female Attentiveness Egg Temperature},
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 number = {Issue 2},
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} 

@Article{GreeHoug2008,
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 title = {Nestling growth and plumage development of the Black-chinned Hummingbird (\emph{Archilochus alexandri}) in southeastern {A}rizona},
 journal = {Huitzil},
 volume = {9},
 number = {2},
 pages = {35--42}
} 

@Misc{Aboutanimals,
 author = {Anonymous},
 year = {2017},
 howpublished = {\url{https://www.aboutanimals.com/bird/black-chinned-hummingbird/}}
} 

@Misc{ADW,
 author = {University of Michigan},
 year = {2001},
 howpublished = {\url{http://animaldiversity.org/accounts/Archilochus_alexandri/}}
} 

@Misc{AllaboutBirds,
 author = {Cornell University},
 year = {2015},
 howpublished = {\url{https://www.allaboutbirds.org/guide/Black-chinned_Hummingbird/lifehistory}}
} 

@Book{Will2002,
 author = {S. Williamson},
 year = {2002},
 title  = {A Field Guide to Hummingbirds of North America},
 publisher = {Houghton Mifflin Company},
 pages = {62},
 howpublished = {\url{https://books.google.pt/books?id=XtZ1xotyal8C&printsec=frontcover&dq=a+field+of+hummingbirds+of+north+america}}
} 

@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}
}