Snow and Bears

Went up to Angeles NF yesterday to play in the snow.  At the Baldy trailhead, the trail up to the cabin was (and thence to the summit) was pretty white, but we got started late so we just fooled around and then went back down.  Fact:  bears in SoCal do not hibernate in the winter.  Do we know what their trigger is then?  (Sun here too bright?  Too warm?  Not enough snow?)

And speaking of bears, now you can go camping without anxiety: