Previously considered a subspecies of the Blue-chested Hummingbird (Amazilia amabilis), the Charming Hummingbird is now usually considered its own species. In comparison with the Blue-chested, the Charming Hummingbird has a longer bill and longer wings. The Charming Hummingbird is also less vibrant overall, but the sparkling green on the head is more extensive than it is for the Blue-chested. Charming Hummingbirds inhabit open woodlands, coffee plantations, second growth, and gardens with flowering trees. They seldom spend time in the forest interior and most often forage individually at low flowers around forest borders. These hummingbirds feed by visiting scattered flowers, defending floral territories, or gleaning insects. During most of the year, males congregate in leks of up to 12 birds and sing together. At times, the population appears to show somewhat erratic movements.