I built a frame huts with 5/8” 4x8 sheets of plywood, 2 sheets on each side of the fence so you have wind and rain protection in each pen, fence in the middle, 16’ long on each side. I just used long screws and drilled em together. Quick fix and has saved a buncha little guys. Bed em down good with CLEAN hay. They love em when it’s cold and windy and also shade when the sun is hot. Granted, if they are born out in the cold rain, it’s tough to get em up and moving and even if you pull em to bottle feed, they usually aren’t even strong enough to get any colostrum. good luck