These territorial hummingbirds favor dense, mossy cloud or elfin forests. They also inhabit forest clearings, forest edges, shrubby pastures, and hedges. When in the forest interior, they spend most of their time foraging low, and they typically feed on nectar by clinging to flowers briefly and holding out their wings in a V position. Tourmaline Sunangels are often seen perching on the outer edges of bushes acting defensively. Males have a violet-blue chin and a magenta lower throat while females have whitish throats with spotting.