Mike,
If you want to go to Eastern Washington, they are all over the Yakima Canyon. Just find some rock slides and get there as the sun is coming up. When they come out to sun themselves, liquefy 'em.
Good luck,
Loki
The ones in Montana are Richardson Ground Squirrels the ones in Eastern Washington are Beldings Squirrels and run a little smaller but are fun to teach to fly.
Mike
P.S.
Still looking for a area to shoot aroung Great falls.
Ulm Pishkun is a big buffalo jump/state park just south of GF,go straight south to Ulm and follow the signs,there is a HUGE prarie dog town right on top of the jump but guess what?NO FIREARMS!