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Effects of DDT on bird population of scrub forest

January 1, 1949

An oil spray of DDT was applied at the rate of five pounds per acre to a 90-acre tract of 5-year-old scrub and sapling growth at Beltsville, Maryland. Bird population studies were carried on in a 30-acre plot at the center of the sprayed area, and in a 30-acre check area of the same habitat one-half mile away. Of the five commonest species in the sprayed area, the Maryland yellowthroat, prairie warbler, and house wren were reduced 80 per cent, and the red-eyed towhee was apparently reduced 35 per cent; while no appreciable change in the numbers of yellow-breasted chats was noted. The total decrease for the five commonest species, which represented 77 per cent of the original population, was 65 per cent.

Publication Year 1949
Title Effects of DDT on bird population of scrub forest
Authors C.S. Robbins, R. E. Stewart
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of Wildlife Management
Index ID 5221337
Record Source USGS Publications Warehouse
USGS Organization Patuxent Wildlife Research Center