It really depends on the bird. I've called a couple in so close I could have whacked them with a mp handle. LOL Those times it wasn't my intention, but stuff happens. LOL I was calling for my buddy Chuck one time. I had started out into the field when I saw birds coming out down below us on a hill. A big gobbler and a harem of hens. I only had time to just drop to the ground prone beside an old log someone had skidded out in the field and left. Chucks about 20 yards behind me on the edge of the woods so sat quick against a tree. Long deal short, I never could convince the gobbler to come but I did tick off one old matriarcal hen that came looking hoping to kick my butt. I was resting my forehead on my arm with my floppy hat pulled down. At one point just peaking out from the edges I could see the hens feet about 2 feet away. Chuck said he thought she was going to walk on me. I'd like to have them about 15-20 yards. It's a slam dunk shot and you can usually get a shot somewhere in their moving and peaking. I've had several birds get way to close for my way of thinking. I've had a WHOLE lot more not get close enough.LOL