"I always see them every year on Stone sheep hunts here in northern BC. It’s amazing how high up in the mountains they go."
They feed on a kit of stuff besides tree bark, which is their winter food. Mostly.
That reminds me - We were hunting for caribou behind Tustemena Lake a few years ago. My son and I spotted a Grizzly/brown bear grazing on a grassy alpine slope maybe 600 yards away.
I put the spotting scope on it.
HA! It was the biggest porky I've ever seen, but nowhere near bear size. Very deceptive...but I still felt foolish.
I heard of one instance where someone shot a griz in bad evening light at "about 200 yards". When they went over there, they could not find it..
Next morning they found a blown up porky at about 100.