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Hazards to Animals Feeding on Blackbirds Killed with 4-Aminopyridine Baits

E. W. Schafer, Jr., R. B. Brunton and N. F. Lockyer
The Journal of Wildlife Management
Vol. 38, No. 3 (Jul., 1974), pp. 424-426
Published by: Wiley on behalf of the Wildlife Society
DOI: 10.2307/3800872
Stable URL: http://www.jstor.org/stable/3800872
Page Count: 3
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Hazards to Animals Feeding on Blackbirds Killed with 4-Aminopyridine Baits
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Abstract

Red-winged blackbirds (Agelaius phoeniceus) killed by ingesting cracked corn baits treated with 3 percent 4-aminopyridine, or by oral doses of 4-aminopyridine, were fed to canines, laboratory rats (Rattus norvegicus), black-billed magpies (Pica pica), and three species of hawks. The test animals consumed the equivalent of up to 3.4 LD50 doses of 4-aminopyridine in single feedings and up to 3.2 LD50 doses a day for 20 days in repeated feedings. None showed any symptoms of intoxication or gross abnormalities at necropsy.

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