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Open Access Publications from the University of California

An evaluation of 4-aminopyridine baits coated to delay reaction time

  • Author(s): Swindle, Kelly F.
  • et al.

In cold weather and early mornings, birds feeding on Avitrol® baits treated with 0.5, 1.0 and 3.0% 4-aminopyridine have shown reaction times as short as four minutes (reaction times of seven to ten minutes are common). Relatively fast reaction times, staggered arrival times of a flock at feeding sites, and delayed feeding by some members of a flock continue to result in premature reactions which frighten birds from the treated bait resulting in insufficient numbers reacting to give the desired repellency. This paper reports preliminary results of an effort to slow chemical absorption in an attempt to minimize this problem.

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