In Idaho They were trying to reintroduce pheasants and out tracking devices on hens to see what they did. Fish and gave told me several hung out in alfalfa fields and they were tracking the devices in hay bales because the swathers were getting them.Alfalfa used to be a great crop for pheasants now it is a death trap. The equipment moves so fast that hens and young birds don't get out of the way in time.