I have a 9 week old barred rock pullet that has a rattle in her breathing and is stretching so that her head touches her back. She is very weak and won't eat or drink and doesn't move well. This morning she had a bit of a rasp to her breathing but she was eating well, went outside for a while and readily ate some scratch feed from my hand as well as had several good drinks of clean fresh water. What could be wrong with her and what would be the best way to treat her? Update... while I was posting this, my wife came in to tell me that the pullet had died. Any ideas on what the problem could have been and how to prevent it in my other chickens?