I know a guy who didn't want to disrupt his elk hunt in Idaho a few years ago and killed his limit of grouse with a stick! He didn't even have to hit the grouse, just hitting the branch they were sitting on made them fall to the ground and flop around like they just got shot. They just sat in the tree and watched each one fall, not a smart bird at all but darn good eating. In Canada on a moose hunt, the guide had us hunt grouse with a sling shot and pieces of lead. It was a blast.