The white-sided flowerpiercer (Diglossa albilatera) reveals the partially concealed white tuft on the body-sides and the underwing linings due to its habit of frequently flicking the wings. It is found in subtropical or tropical moist montane forests and heavily degraded former forest in in Colombia, Ecuador, Peru, and Venezuela. The male is otherwise almost entirely slate gray, whilst the female is olive-brown above and warmer brown below. The Flowerpiercers are part of the tanager family. They were named for their habit of piercing the base of flowers with their highly adapated bills to access the nectar inside the flower.