help identifying holes in yard
I have about 5 small holes in my bermuda lawn. They are a bit smaller than a golf ball, and they are shallow in that the hole is only about 2-3 inches below the surface. The grass around the hole is dead, but there is no dirt mound around the hole, and there is no raised mound anywhere around them. They are connected, because I dropped a smoke bomb into one hole, and smoke came up several other holes. Any ideas on what critter is causing this? The white object next to hole in the picture is a golf ball.