The Bronze-tailed Thornbill occurs in the high Andes of Colombia and western Venezuela. The male has a green throat and a pink-purple breast spot, and the bird feeds on nectar.
The male has a bronze back, long black crest, iridescent green throat, and small pink-purple breast spot. The female lacks the crest and breast spot and has a white throat.
It visits flowers in high-altitude grassland and scrub, feeding mainly on nectar. The Colombian guide records it briefly clinging to Espeletia flowers while feeding.
An extinction-risk assessment has not been added yet.