I have a little half-bantam mixed breed chick that i just got yesterday. Since she was let out this morning she has been a bit puffy and barely moving in contrast to yesterday. I set up a little chick heater incase she was cold and put her under it. There were no signs of injury anywhere on her and her vent was clearly visible and had no stuck poos or dirt. She is eating and drinking but i haven't seen her go poo yet since I've been out there this morning. She'll run if she feels threatened by anything. Is it possible that she is constipated, or maybe going through some emotional trauma over being moved here? Her friend that i got with her is refusing to leave her side so she isn't alone. The other one seems to be just fine.