Please help! My 4 wk old Roo just started gasping like he cant breathe and stretching his neck out far. He also seems very sleepy. He started falling asleep standing up at the door. Im very new to Chickens and am worried about losing my favorite guy! Dont know what to do! He was perfectly fine this morning. It is pretty hot today, but they have fresh water this morning and I just refreshed it and put ice in it just a few minutes ago. HELP!