We have a blow up yellow ball, about the size of a beach ball. It has red circles, like bullseyes on 4 sides and the center ring is reflective. It has kept the cardinal off my red car. It really works. Scared our 23 yr old son when he came home late the night my DH hung it in the tree next to my car. It came down the next day. son complained too much. Yes the cardinal is back. Guess he like the big, silent type.