https://pbase.com/wimdegroot/image/133913002
empress brilliant (Heliodoxa imperatrix, ESP: brillante emperador) photo - Wim de Groot photos at...
https://par.nsf.gov/biblio/10416704-interspecific-hybridization-explains-rapid-gorget-colour-divergence-heliodoxa-hummingbirds-aves-trochilidae
Interspecific hybridization explains rapid gorget colour divergence in Heliodoxa hummingbirds...
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interspecifichybridizationexplainsrapidgorget