Their coloration is gull-like, but their shape and flight falcon-like, with a rounded tail. Mainly white underneath, they have black wingtips and shoulders. A mid-sized kite, it measures 35–43 cm (14–17 in) in length, spans 88–102 cm (35–40 in) across the wings and weighs 250–380 g (8.8–13.4 oz). Both the wings, at 29–32.8 cm (11.4–12.9 in) each, and the tail, at 15.1–18.6 cm (5.9–7.3 in), are relatively elongated. The tarsus measures around 3.6 cm (1.4 in).