Ruffies here in late Season will be located in Aspen stands if it isn't too bad of weather (cold & deep snow). Preferably near conifer stands. Brush along creeks with Balsam & popple mixed in
and tangles / blowdowns help provide cover from predators.
Once it's deep snow time & deep cold look in the heaviest cover available near a food (catkins) source. Small cedar swamps,
creek bottoms with mix of brush & conifers, and a feed source.