I am hoping someone can help us figure out what is happening. One of our chicks was lying on its side breathing hard, looking like it is dying. Other chicks occasionally run over and jump on it and peck it. As background, we started with 16 pullets and 2 cockerels in the brooder. They were born on Monday and arrived on Wednesday. One died on Wednesday afternoon, likely stress from the trip. Another one was dead this morning when we woke up. When we got home, this one is near death. There are three different breeds-dominiques, Favorelles, and black copper Marans. One of each breed will have died if this one goes. They all seem to have a lot of energy and are running around chirping. Temperature is in the 95-98 range. They have food and water. We change the paper towel over the shavings every day. Any advice on what to do?