Ruby-topaz Hummingbird (Chrysolampis mosquitus)
Photographed on 21 July 2013 at the rio Santa Helena near the Fazenda Caiabi gate, where it was feeding at a flowering Inga sp. with at least 6 other hummingbird species.
This is a rare annual visitor to the region, usually in the austral winter and spring. The movements of the species into Amazonia are very poorly known. I had 3 individuals at the same location (almost the same tree) almost exactly one year earlier, on 19 July 2012.