The White-Tailed Emerald (Elvira chionura) is a species of hummingbird in the Trochilidae family. It is found in Costa Rica and Panama. Its natural habitat is subtropical or tropical moist montanes.
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- BirdLife International 2004. Elvira chionura. 2006 IUCN Red List of Threatened Species. Downloaded on 10 July 2007.
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