Our youngest chick was found this morning looking very sick. She's about 4 weeks old. She can't stand up on her own anymore and feels cold. I've put her under the brooder to get warm but i don't know what i can do. She's not opening her eyes much either and her legs seem wobbly. I've tried feeding her but she seems too weak to peck. She had splady legs when she was a baby but they got better with a splint. She's my favourite chick and i don't want to loose her.