Bucky doesn’t hibernate either, he just goes into torpor.
(Oops. This wasn’t as funny as I thought it would be when I began to type it out, because I thought the final word was going to be “stupor”. But apparently the secret dictionary part of my brain decided I was thinking about torpor rather than stupor when it came to something akin to hibernation.)
Lousy brain. I’ve been foiled by you again! /meshakefistnow