Have you tried calling them? Back East in Southern Ontario, I used a squeaker for calling squirrels - worked like a charm. i'd walk intop the maple and oak bush, find a good spot to sit against a large Oak, then wait for the forest sounds to resume. I'd then sweeck on the little rubber squeaker (probably from a kid's toy), but purchased at a sporting good shop, then stop, squeak again a few times, then stop. In les than a minute, you could hear them coming through the branches and 'splashing' thorugh the leaves, coming to the call. At a shot, they'd scatter, then let the sounds of the bush, birds, etc resume then start squeeking again and they'd come back. I used this meathod for about 6 years, until I left the area - it was always productive.