@Misc{Wiki,
 howpublished = {\url{http://en.wikipedia.org/wiki/Rhea_americana}}
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@Book{Kooy2010,
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@Article{NavaVign2005,
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@Article{KilgBern1973,
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@Article{PrinDiet1997,
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@Misc{nationalgeographic,
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@Misc{avianweb,
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@Misc{AnAge,
 howpublished = {\url{http://genomics.senescence.info/species/entry.php?species=Rhea_americana}}
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@Misc{ARKive,
 howpublished = {\url{http://www.arkive.org/greater-rhea/rhea-americana/}}
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@Misc{KirwKort2021,
 doi = {10.2173/bow.grerhe1.02},
 author = {Kirwan, G. M. and A. Korthals and C. E. Hodes},
 year = {2021},
 title = {Greater Rhea (\emph{Rhea americana})},
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@Article{PrinPres1991,
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@Article{ValdCort2014,
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 author = {Diego Javier Valdez and Marilina Vera Cortez and Natalia S. Della Costa and Alvina L{\`e}che and Cristian Hansen and Joaqu{\'i}n L. Navarro and M{\'o}nica B. Martella},
 year = {2014},
 title = {Seasonal Changes in Plasma Levels of Sex Hormones in the Greater Rhea (Rhea americana), a South American Ratite with a Complex Mating System},
 journal = {PLoS ONE},
 volume = {9},
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@Misc{avibase,
 howpublished = {\url{https://avibase.bsc-eoc.org/species.jsp?lang=EN&avibaseid=00986B2456382647&sec=lifehistory}}
}