Chestnut-breasted Coronet (0045)
The Chestnut-breasted Coronet was a regular visitor to the feeders at Guango Lodge in Ecuador. He's not quite as aggressive as the Buff-tailed Coronet, and the deep golden-brown hues of his front are quite distinctive. They are found from Colombia to Peru, mostly along the eastern slopes of the Andes. Based on descriptions I've found, the buffy coloration in the throat suggests this is a female.