Swainson's Hawk

Tweet of the Day is the voice of birds and our relationship with them, from around the world. Miranda Krestovnikoff presents the North American Swainson's hawk. About the size of the European buzzard, Swainson's hawks are dark-brown birds, rusty brown on the chest and white on the belly, and a familiar sight across open farmland and prairies of western North America where they soar effortlessly in search of prey. Most winter in South America, this epic round-trip of around 20,000 kilometres is probably the longest regular migration made by any American bird of prey. When they reach their wintering grounds they switch diet. In North America they feed mainly on mammals, but in South America, they gather in flocks to hunt dragonflies and grasshoppers in the vast pampas plains.Producer : Andrew Dawes