Regarding the discussion on rodenticide and owl deaths, the Barred Owl removal team tested the carcasses for rodenticides. People might be interested in reading the paper referenced below for results.
Anticoagulant rodenticides in Strix owls indicate widespread exposure in west coast forests - ScienceDirect
https://www.sciencedirect.com/science/article/abs/pii/S0006320719309346
Scott Downes
Downess at charter.net
Yakima Wa
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