The Buff-winged Starfrontlet is a 14 cm hummingbird. It feeds mainly on nectar in humid Andean forest and along forest edges.
The account gives a length of about 14 cm and a weight of about 7.3 g.
The account places it in humid Andean forest and forest edges, mostly at 2,600–3,600 m. It is active by day and is classified mainly as a nectarivore; fruit is also included in the diet data.
An extinction-risk assessment has not been added yet.