The Green-Breasted Mountain-Gem (Lampornis sybillae) is a species of hummingbird in the Trochilidae family. It is found in Honduras and Nicaragua. Its natural habitat is subtropical or tropical moist montanes.

Source

• BirdLife International 2004. Lampornis sybillae. 2006 IUCN Red List of Threatened Species. Downloaded on 10 July 2007.

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