I have a five-month-old pullet who seemed less active than usual yesterday but with no other symptoms. Today she is standing in place, looking a little hunched, with her tail down and mouth slightly open. There is no nasal discharge and her eyes look fine. She has not yet started laying eggs. Her friends are all lying down to nap but she's still standing up (though she did move to be near them). She hasn't started laying yet; is it possible she's egg-bound? I have a vet appointment for her but it's not until tomorrow afternoon. Thanks!!