Versicolored Emerald

The versicoloured emerald (Chrysuronia versicolor) is a species of hummingbird from central and eastern South America. == Taxonomy == The taxonomy is very complex and remains a matter of dispute. The nominate subspecies (C. v. versicolor) occurs in two main morphs; a white-throated coastal type and a green/turquoise-throated inland type. At some localities individuals with intermediate features are commonly seen, but at others the two morphs seemingly co-occur without signs of intergradation. The coastal morph was formerly known as C. brevirostris, but a review lead to this name being considered to belong to the white-chested emerald of northern South America. Recently, it has been suggested that the coastal type should remain as C. brevirostris, but this has been disputed, and has yet to gain wide recognition. The exact distribution limits between several subspecies of the versicoloured emerald are poorly known, and, in addition to the coastal nominate, some other subspecies have been considered separate species, especially the blue-green emerald (C. (v.) rondoniae), also known as the Rondonia emerald. This was based on plumage and reported sympatry with C. versicolor (ssp?), but except for the blue to the head, C. v. rondoniae is very similar to C. v. nitidifrons, and any…