Rosenbergamazilie Polyerata rosenbergi

Emerald green hummingbird found in humid forest in lowlands and foothills of northwestern Ecuador and western Colombia. Note, especially, the white vent. Male has bluish-purple patch on breast, which is reduced or lacking in female. Both sexes quite similar to Blue-chested hummingbird but can be distinguished by the contrasting white vent. Usually encountered at forest edge or in clearings, and visits feeders in a few places.