Dear Birders,
I'm sooo sorry to hear about the killing of these magnificent birds. Hope you find the info below helpful.
Might I suggest that you contact Denver Holt at  owlmontana at blackfoot.net with https://www.owlresearchinstitute.org/ 
OR 
University of Florida's Dr. Richard Raid at rnraid at ufl.edu . Dr. Raid has spent over 30 years working with the farmers of south Florida in using Barn Owls rather than pesticides for the riding of the rodent population.
https://erec.ifas.ufl.edu/faculty/raid/ 
https://www.auduboneverglades.org/tues-feb-6-at-7pm-meeting-lecture-barn-owls-natures-mousetrap-by-dr-richard-raid-professorplant-pathologist-and-manager-of-the-barn-owl-project-everglades-research-and-education/
Hope this helps!!!

Dale
S. Dale GoebelDunedin, FL 
Seattle, WA
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