I’m thinking bears would just sleep right through it, but will it kill most of the deer and elk?
This kind of Sierra snowfall is unusual, but not rare. In my lifetime, I’ve seen snows like this, or more, including spring snow, 4 or 5 times. There’s a reason the town of Norden, near Donner pass, has snow sheds covering many sidewalks. Having 3 meters of snow on the ground is common there.
I dunno about deer, but reports are that half the monarch butterflies died. That’s gonna affect flower pollination and birds (as source of food)