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Case histories of bald eagles and other raptors killed by organophosphorus insecticides topically applied to livestock

Journal of Wildlife Diseases

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Abstract

Since 1982 when secondary poisoning of a red-tailed hawk (Buteo jamaicensis) was documented following the recommended use of famphur applied topically to cattle, the Patuxent Wildlife Research Center has tested dead birds of prey for poisoning by famphur and other pour-on organophosphorus (OP) insecticides. Brain cholinesterase (ChE) activity was first determined, then if ChE was depressed greater than or equal to 50%, stomach and/or crop contents were evaluated for anti-ChE compounds. This report presents the circumstances surrounding the OP-caused deaths of eight bald eagles (Haliaeetus leucocephalus), two red-tailed hawks, and one great horned owl (Bubo virginianus) between March 1984 and March 1985. OP poisoning of raptors by pour-on insecticides in the United States is widespread, but its magnitude is unknown.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Case histories of bald eagles and other raptors killed by organophosphorus insecticides topically applied to livestock
Series title:
Journal of Wildlife Diseases
Volume
23
Issue:
2
Year Published:
1987
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
292-295
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Wildlife Diseases
First page:
292
Last page:
295
Number of Pages:
4