Whistling Kites are a common sight, often soaring over roads while looking for roadkill to scavenge. They can be found over all but the driest areas of Australia, often in groups. As suggested by the name, they can be often heard making a downward whistle while in flight, with which they stay in conact with each other. As with many raptors, the females are generally larger than the males, but there is some overlap in size, which ranges from 50-60 cm in length and 120-150 cm wingspan.
1: Georgetown, Qld, 11/03/2012.