Hello this is my first post but have been reading here for quite some time learning about this addiction. My wife and I have just built our dream home in Texas and moved in in August. The last 5 months has been trial and alot of error in raising animals especially chickens. We have a 30x20 coop its open on the east side with carpet hanging down to block wind and enclosed on the other 3 sides with a roof. I started out with 14 red sexlinks that were laying in August. Slowly I've lost 7 for no apparent reason. They are free ranging today dead in the morning. 2 weeks ago I got a good deal on 51 month old rir chicks. I kept them in a cage for a week in the garage and wife said no longer. So I let them go in the coop and crossed my fingers. All was well till today I had 13 dead chicks and 1 dead hen. No feathers gone no blood nothing looked suspicious just dead. I had been feeding them a 3 part mixture of grower laying crumbles and scratch with no problems. Now last Saturday and Sunday we got hit hard with sideways rain and then Mon night it dropped into the high 20s. The coop was damp in spots but dry in most of it. I didn't have a heat lamp on them but there was straw covering the floor. I clean the coop out weekly and put down fresh straw. Basically I don't want to keep throwing money at buying birds so they die. What am I doing wrong and how can I stop the problem.