If there's more than just one or two about you hunt them with a .22LR which is good for 80 yds. You still hunt: walk around very slowly and look for them. If they are scarce, you may have to shoot them perhaps up to 150 yds away, or not get them, in which case a .17HMR, .222 or even a .223 has the range. The .222 and .223 will destroy them because you won't get a headshot at 150 yards usually, you aim for the upper body. If you hunt them with a revolver or handgun your success rate will be low unless you're a very good shot with it. You need to do it several times so that you get used to being able to spot them,,,an ear, an eye or a rabbit shape behind some brush.