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9 Robin aerial analyzed Table Baltimore Oriole Benton Bernard bird mortality Birmingham area Black-billed Cuckoo Black-throated Green Warbler blue jays breast muscle brown creeper Cedar Waxwing censuses Common Grackle control of Dutch counts Cranbrook campus Cranbrook collection Cranbrook Institute Cranbrook specimens dead and dying dead birds dead or dying dead robins Detroit area die-off Dutch elm disease Dutch elm program dying birds early East Lansing elm disease control elm disease programs elm sprays feeding foliage gleaners foliar found dead Glover Grosbeak Hawk high levels House Sparrow insects Institute of Science June Kreag late April levels of DDT liver M.S.U. campus Michigan State University mortality to birds mosquito Mourning Warbler negative for DDT nests numbers Ovenbird pairs picked Pine Siskin ppm of DDT predatory birds Princeton purple martin retrieved saved Specimen saved screech owls southern Michigan sprayed elms spraying programs spring of 1960 Starling sublethal toxicity Tremors victims vireos Wallace Winter 59