Don't know what you have on it now or how much you want to spend? My rule of thumb is the smaller the annimal the bigger the scope. Most of my coyote gun have low power variables, my 22 LR paper puncher has a 30mm 8x32x40 scope.
The Mueller APV 4.5x14 would make a great scope for what your going to do and is very reasonably priced. If you just feel that you want to spend more or want a scope from the top four anything in 4x16 area (4x12, 4.5x14, 5x15) should work fine. The new Redfields, Nikon Buckmaster & Prostaff, Bushnell Legend & 3200 Elite are all nice scopes and reasomably priced.
AWS