Bulletin of the of Agriculture . UNITED STATES DEPARTMENT OF AGRICULTUREBULLETIN No. 619 Contribution from the Bureau of Biological SurreyE, W. NELSON, Chief. Washington, D. C. PROFESSIONAL PAPER FOOD HABITS OF THE SWALLOWS A FAMILY OF VALUABLE NATIVE BIKDS ByF. E. L. BEAL, Assistant Biologist CONTENTS Food Habits of the Swallows 1 Purple Martin . 3 Cliff, or Eaves, Swallow . 6 Barn Swallow 11 Tree, or White-Bellied, Swallow ... 15 Violet-Green Swallow ....... 19 Bank Swallow . 21 Bough-Winged Swallow ....... 25 Tabular Summary ......... 28

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear