Over the past few days, I've been comparing the stock and Signature versions, and testing how much time it takes to set them up, start them and restart them in daily use, resume them from sleep, and shut them down.
In the same way, they hibernate by going into torpor, they can do the same thing on a very short-term basis through the summer - if it is wet and windy and there is no food then they just shut down their body temperature and they just sleep it out.