National Geographic : 1935 Feb
SILENT-WINGED OWLS OF NORTH AMERICA © National Geographic Society LET RATS AND MICE BEWARE THESE OWLS' SHARP TALONS When the author analyzed more than a thousand disgorged pellets of a pair of barn owls (top) nesting in a tower of the Smithsonian Institution, Washington, he discovered that they had consumed 2,853 rodents. Because of its characteristic markings, this bird is known to many as the "monkey-faced owl." It and the long-eared owl (left), of catlike face, hunt chiefly at night. Inhabitant of marsh and prairie, the short-eared owl (bottom) has no fear of the sun, being abroad frequently by day. The three represent two families found throughout the United States, the range of the short-eared owl being almost world-wide.