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Show On the Night Shift. . Nlghthawks and whlppoorwllls work chiefly at night, when most of th. other birds are off duty, and at daybreak day-break their good work Is taken up by the swifts and swallows, says Nature magazine of Washington. These birds are provided with big scapnet mouths, and as theywlng through the air over wide areas of country, they scoop up almost unbelievable numbers of Insects. Six hundred were taken from the stomach of a single Arkansas nlghthawk. MM Mil Ulii-m nip inlMll |