My 19 EE bantams are going to quickly outgrow their brooder and are already trying to fly out of it. I didn't even know just-over-week-old chicks could fly...? They have two brooder lamps; a 150? degrees white bulb that stays on all the time and a 250 degrees red bulb that I was turning on at night for them. I decided to leave the red light off last night and they did fine. I'm planning on doing this for the next couple nights and then start leaving the white light on only at night, eventually leaving it off completely. I'm aiming for adjusting them to be outside by 3 weeks (Sept. 14th or so). I also plan on taking them out for gradually increasing time periods so they can get used to their pen/coop. From what I've read, this sounds okay, and their pen is pretty darn secure, but their coop is basically just a wooden box (no electricity) with a couple of holes for entrances. Would this be too harsh or unrealistic for bantam chicks? Is there anything that I should do to the coop (temporarily) to make it more secure for them? Also, they are already 1/4 to double the size they were at 2 days. About how big will they be at 3 weeks?