The male is 22 centimeters in length with the elongated outer tail-feathers accounting for 14-15 centimeters. Its color is mostly green. The throat is blue and the outer tail-feathers are violet, becoming blue towards the tips. The female is 9.5-11 centimeters long. The tail is shorter than that of the male but still fairly long and slightly forked. Females have a blue crown and white throat, breast and belly.