Anyone who can help, please! I have a 4wk old chick who out of the blue seems ill or maybe injured? She's sitting alone, puffed up, just sleeping. When I went in the brooder to check in hey, the other chicks ran over top of her,and she didn't get up. She can't stand, and when I picked her up, she flopped over and arched her head all the way back to her back. She's just laying there. I've tried giving her some sugar water. She's had a poop that is pinkish brown. Please tell me what to do! These are my first chicks ever.