Striated caracara Phalcoboenus australis on Carcass Island in the Falkland Islands, South Atlantic Ocean. Striated caracara Phalcoboenus australis on Carcass Island in the Falkland Islands, South Atlantic Ocean MORE INFO This bird is a bird of prey of the Falconidae family In the Falkland Islands it is known as Johnny Rook It breeds in several islands in Tierra del Fuego, but is more abundant in the Falklands where the population is estimated at 500 breeding pairs Its habit of attacking newb