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Show k . On tha Night Shift ,,;..,.. NIghthnwks and whlppoorwllls work ' chrefly at night, when most of th .; other birds are oft duty, and at daybreak day-break their gnod work Is tuken up by the swifts and swallows, snys Nature magazine of Washington. These birds .,,; are provided with big scapnet mouths, and as they swing through the air over wide areas of country, they scoop 1 up almost unbelievable numbers ot Insects. Six hundred were taken from the stomach of a single Arkansas nighthnwk. . s. |