The Falcon family is divided into the Falcons proper, the Eagles, Sea Eagles, Harpy Eagles, Buzzards, Hawks, Goshawks and Harriers. Falcons properly so called (from falx a reaping-hook) are the ideal Birds of Prey. They have a short bill bent from the base with a very strong tooth on each side of the upper part, with which an indentation corresponds in the lower portion. The wings of this Bird are long and pointed, causing its flight to be powerful and rapid. They feed only on living prey, Birds and small Mammals, and they always hunt on the wing. THE EAGLES. [Illustration: HARPY OR CRESTED EAGLE.] The Eagles are distinguished from the Falcons proper by their strong bills which are scalloped and not toothed. Their wings are long and tails rounded. The Harpy or Crested Eagle is called the model species of this tribe. It is very large and the most formidable, measuring nearly five feet from the extremity of the head to that of the tail. Its bill is more than two inches in length, and its claws and toes are larger and more robust than the fingers of a man. It is said that the Harpy does not fear to attack animals of large size and even Men. Two or three blows from its bill are sufficient to break its victim’s skull. The Harpy inhabits the great forests situated on the banks of the rivers of South America. The Indians, who have great admiration for its warlike qualities, show great respect for this Bird; and they use its long wing and tail feathers to adorn themselves on state occasions. THE STONE EAGLE. [Illustration: Eagle Picking up an Ice Fox.] Anyone who has visited Switzerland has often seen these powerful Birds swaying majestically over the highest point of the Alps. With widespread wings they glide along with easy motion. The sharp eye searches the earth anxiously and discerns the smallest prey from the greatest height. The Bird descends with slow circling movements and presently drawing his wings with loud, rustling noise, he darts to the earth like an arrow. He buries his outstretched fangs into the body of his prey and crushes it sooner or later, according to its size and power of resistance, without the use of his bill. After killing his prize, the Eagle spreads himself out to his full size and gives vent to a triumphant shriek of conscious victory. The powerful bill then begins the work of annihilation. He steals smaller and larger animals—Rabbits, Lambs, Kids and Foxes. Nordmann relates that Stone Eagles have even been known to pounce upon heavy Swine. Neither are small Children safe from him. Among Birds, his prey is the Crane, Stork, Duck, Goose, etc., or any large and clumsy Bird. He does not attack swift Birds.