Sparkling-tailed Hummingbirds are perhaps best identified by the white patch on each side of the rump. Males have long, forked tails which appear black with white bands when folded. Males also have blue or bluish purple throats, while females are cinnamon below. These medium sized hummingbirds are not often heard while foraging, but males sing a high thin song from open perches. When feeding on scattered flowers, their flight is slow like that of a bee, and wing beats even sound insect-like. Sparkling-tailed Hummingbirds inhabit humid and arid forest borders, brush-filled second growth, and scrub woodlands.