When I strung up the caution tape and orange surveyors tape, my thought was to make a predator bird afraid of getting tangled up in it. I then took bits and pieces of bird netting (black 1/2" holes) and tied it with kite string to the fence top and then anywhere else handy. It stays up maybe...
I have the same problem. Hawks sit in the tree and just drop down onto a bird. I got some of that yellow caution tape and stringed it between fence posts, putting a post in the ground for support here and there. Neighbors wonder what's going on, it looks like Halloween. I've also heard of...