I have 25 chicks coming fro McMurray and I can hardly contain my excitement! I will only be keeping about 10 chicks out of this group and hoping to find homes for 15 within their first week. I need some input on my setup so I can prevent problems. I don't have pictures yet so I will try and describe it as best I can. I'm using a 4ft x 8ft whelping box and a portable metal pen. Not sure how I'm going to attach the pen to the whelping box yet. The sides of the whelping box have inserts that raise the sides to 3ft. My first question is how high, how soon can chicks jump out? Also, I'm planning on using half the whelping box for the first 2 weeks and then opening up the rest of it for 2 more weeks and then adding the pen for however long it takes for them to safely join the rest of the flock. By this time I will have everything covered on top to prevent escapees. I may be able to move the pen outside while having the whelping/brooding box inside the barn. Is this a good or bad idea to put the pen outside?? I can also keep everything in the barn, maybe put the pen just next to the barn door for a little fresh air. Also thick plastic will be on top of the plywood box and on the concrete with shavings on top if I put the pen in the barn. My goal is to minimize the mess if at all possible!