Sếu_Mỹ
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WikiPedia: Sếu_Mỹ http://www.timesdaily.com/stories/Whooping-cranes-... http://www.birds.cornell.edu/clementschecklist/dow... http://www.fws.gov/northflorida/WhoopingCrane/whoo... http://www.iucnredlist.org/details/106002796/0 http://www.nebraskabirdlibrary.org/index.php/gruif... http://www.tpwd.state.tx.us/huntwild/wild/species/... http://chinhphu.vn/portal/page/portal/chinhphu/het... https://web.archive.org/web/20120322093148/http://... https://commons.wikimedia.org/wiki/Category:Grus_a... https://species.wikimedia.org/wiki/Grus_americana?...