black-thighed puffleg Eriocnemis derbyi

Scintillating hummingbird of the high Andes of Colombia and far northern Ecuador (it does not reach the Quito area). Male is dark glittering-green (with brighter rump and vent) and has inconspicuous black leg puffs. Female is brighter green with small white leg puffs, blue forehead, and white scaling on throat and breast. Typically seen feeding at the edge of elfin forest or in scrubby ravines.