I have 4 Bard Rocks and I got tired of them constantly bothering the other younger chicks and flying everywhere. So I decided to put them outside(first time) with food & water, temp was okay and they had an 8 x 6 area to roam. They are 3 1/2 weeks old. I brought them inside and now they don't fly anymore and are resting alot. They get up for food and water, then they lay down and rest. Is that normal? They've been soooo active that this seems unusual for them. Should I not have had them outside?