I called one up turkey hunting one time. I was set up off a trail leading to a green field where I had a bird gobbling. Visibility was a somewhat limited in a few directions. He snuck in on me and was about 15 ft when I first saw him. He startled me for a second and before I could get my gun on him he took off. One other time, probably 20 yrs ago, I was hunting Choccolocco WMA and was walking and blind calling later in the morning. I sat down on a little bench and yelped on my box call. All of a sudden I heard something tearing up toward me from the bottom of the hollow. A coyote popped up right in front of me. We both said "Oh chit!". He turned around as quick as he appeared and was gone. Happened so quick I didn't even have a gun in my hand.