The Black-throated Flowerpiercer is among the more colorful of the flowerpiercers. It is black above with a grey rump, grey stripe behind the eye, and grey shoulders on the blackish wings. Below it is entirely rusty, with a large black throat patch and noticeable grey flanks. Like classic flowerpiercers it has a modified bill with a small hook at the tip which it uses to pierce the base of flowers in order to “steal” nectar without aiding the flower in pollination. Its distribution is largely in the Andes of Peru, extending south into northernmost Chile and Northwest Bolivia. Curiously there is a recently described and extremely isolated form found in Northwest Colombia. It is similar, although smaller in size but with more black on the throat. This isolated form warrants study, this level of range disjunction is odd to say the least. The Black-throated Flowerpiercer is found in slopes with flowering shrubs; it will range into Polylepis woodlands, as well as other forest borders and even Eucalyptus groves when they are flowering. Its song is a high pitched warbling.