Versicolored emerald

The versicoloured emerald (Chrysuronia versicolor) is a species of hummingbird from central and eastern South America.

It has a total length of 8–10 cm (3–4 in). The relatively long, slightly decurved bill is black with flesh-colored (occasionally orange) base to the lower mandible. The tail is coppery-green with a dark subterminal band. The upperparts and flanks are coppery-green. The central underparts and crissum (the undertail coverts surrounding the cloaca) are white. The color of the throat, face-sides and crown varies greatly both individually and depending on subspecies. The throat ranges from all greenish or turquoise (edged white in female) in inland nominate, nitidifrons and kubtcheki, to bluish in rondoniae and white (essentially a continuation of the white central underparts) in coastal nominate, hollandi and millerii. Most races have green face-sides and crown, but this is typically turquoise-blue or azure blue in hollandi and rondoniae.