These small glittering hummingbirds with striking white undersides were common in the Andes in southwestern Colombia. I photographed them at about 2000 m in the Western Andes near Cali and at the base of Montezuma Peak, several hours to the north.
Canon 7DII; 800 mm IS lens + 1.4X extender or extension tube, fill-in flash (2015, 2016)