Bad news...I am sorry to say my chick didn't make it. She died less than a hour ago. Since I only noticed this morning she was ill and now she is dead, it was just over 12 hours since I first segregated and started treating her. I must have just not noticed she was not acting right due to all the other activity in the brooder, because it seems like such a short timeframe for her to die. I've cared for an injured hen (bitten by a dog) that I thought would die for sure and she pulled through after about 3 days, so I guess I was thinking the chick would probably make it too. I will be watching all the other chickens very closely for the first signs of symptoms, and just keeping my fingers crossed it was not a communicable disease that killed her, one that could have infected any of the other chicks before I segregated her.