Also, since you only have 3 chicks, consider using an old playpen. That's what I do for small batches. They can grow to 8 weeks with just three in there no problem.
Simple. Easy.. You can hang the light from the ceiling and cover the top with fencing. Here I was using screens, but I did make a top for it as well.
![_MG_4053.jpg](/proxy.php?image=http%3A%2F%2Fi948.photobucket.com%2Falbums%2Fad326%2Faoxa%2FChickens%2520-%2520Summer%25202012%2F_MG_4053.jpg&hash=50966d9256daa1504f1e383416f557df)
![a628bda6.jpg](/proxy.php?image=http%3A%2F%2Fi948.photobucket.com%2Falbums%2Fad326%2Faoxa%2FChickens%2520-%2520Summer%25202012%2Fa628bda6.jpg&hash=19c2e9671be9bb1fc0639fc236e612ab)