These small hummingbirds inhabit montane and coastal scrub, forest borders, open woodlands, agricultural areas, and gardens. Males and females both make regular visits to the same group of scattered flowers and also catch insects. During courtship displays, males fly back and forth like a pendulum in front of females. Purple-collard Woodstars have relatively long, curved bills and males have a stunning, teal throat with a purple collar. Females are buffy below with white at the end of the tail.