whirly-gigs are the yard spinners, also pinwheels.
Paint balls are probably not a good idea though, they leave evidence on the bird and if your local wildlife management organization wants to be jerks you can get in trouble for harassing a bird of prey. Hopefully they would be understanding because the hawks are after your chickens, but I'd be wary just the same.
Paint balls are probably not a good idea though, they leave evidence on the bird and if your local wildlife management organization wants to be jerks you can get in trouble for harassing a bird of prey. Hopefully they would be understanding because the hawks are after your chickens, but I'd be wary just the same.