Snapped this picture earlier this year when attending a pheasant management seminar in Janesville, WI. The trap is simple and effective on recapturing those escapees. They seem to naturally come back to the flight pens and walk around the perimeter looking for a way back in to the food and water and their feathered friends. You have to check them daily because they are not predator proof. Just pop the top and drop them back over the fence into the flight pens. I wish I had written down the dimensions on the funnel though.