Grizzlies can wander large distances and pop up as a lone bear or in small numbers where they are not expected or where it is not widely known. I don't believe government agencies are likely to broadcast the info in such cases. I know they show up in unexpected places in both Montana and Washington. That includes fairly far south in WA so OR isn't too much further.
They are heading more and more east into central MT. Not 1 or 2, but several. It has been awhile since there has been a bigfoot sighting though.
