When I was a kid, we just used our mouths to call. A friend taught me...and it's pretty easy. We used to call them when the squirrel hunting was slow, and we killed a lot.

Later, I bought an electronic call and you had better have your gun loaded when you turn it on. We never let the first one go...but he is known as the sentinel. He acts as sort of a lookout for the murder.

It's a blast, and they really have no other population control. Just make sure to hide well, because they can see pretty darn well.