I hang old cd's from fishing line over my chicken coops, too. The movement and sparkling seem to help (we have actually had issues with not just hawks, but a juvenile eagle, too). I do have an owl decoy. I love the idea of some crows in the yard! Just for grins and giggles, and because my neighbors already think I'm nuts. *grin*
I don't guess the fake flamingos are any sort of deterrent, huh? I love them though. lol |