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" Carbamate baits discourage blackbirds from using feedlots "
Woronecki, Paul P.; Guarino, Joseph L.; Besser, Jerome F.; DeGrazio, John W.
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AL
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| Record Number
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941587
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LA4h2086gf
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| Language of Document
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English
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| Main Entry
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Woronecki, Paul P.; Guarino, Joseph L.; Besser, Jerome F.; DeGrazio, John W.
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| Title & Author
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Carbamate baits discourage blackbirds from using feedlots [Article]\ Woronecki, Paul P.; Guarino, Joseph L.; Besser, Jerome F.; DeGrazio, John W.
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| Title of Periodical
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Proceedings of the Vertebrate Pest Conference
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| Volume/ Issue Number
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4
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| Date
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1970
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| Abstract
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Red-winged blackbirds (Agelaius phoeniceus) have been discouraged from using cattle feedlots near Denver, Colorado, by baiting alleys with cracked corn treated with an aversion-producing immobilizing agent, DRC-736 [4-(methylthio)-3,S-xylyl N-methylcarbamate]. In three studies, large populations of redwings were reduced 70% - 98% within a few days and protection lasted about a month. In a fourth study, simultaneous baiting of three heavily used feedlots reduced redwing use by more than 90% within hours and was apparently responsible for these birds abandoning their roost and relocating in areas where they caused little trouble. Mortality was low (less than 5% of affected redwings in the fourth study), and few birds of nontarget species were affected.
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