well went out last week, had made 2x crow and 1x magpie hanging decoy, so put those up a tree right under the crows flightline, at around 26ft high, then placed the owl on the pole, with a dead magpie fixed at its feet (glued a screw-in eye at feet) for attaching birds, at around 20ft high, this was on a saturday morning, now crows must be more inteligent than we/I though, as 5 days a week, you'll get 200 plus crows flying over my permission towards the local landfill site where they feed, on weekends its shut, no lorries,no diggers moving, and I reckon the crows know that no lorries means no