I agree, as long as he's not clipped out and nicely rugged up leave him out. Mine wintered out all last year. It is much more natural for them and they dont get stressed. It's hard not to feel guilty when the weather is vile but they are designed to be out, as long as he has somewhere he can duck out of the wind and driving rain then he will be fine. Top tip though is Calm and condition feed with some chaff and coarse mix helps keep some of the condition on. x