I need some advice. I have a chick that was fine on Monday evening and dead late Tuesday night. I am at a loss. They have all been acting fine. No diahhrea or anything. This one was acting lethargic yesterday evening so I decided to isolate him last night. I got up this morning and he is dead. I had taken his food away from him overnight to make sure his crop was working correctly. I did leave water in there with him though. They were hatched about May 17th. They are not on cedar, they are fed chick feed. I am wondering if I need to go ahead and give the rest of the chicks antibiotics. I did have a RIR hen die about a week ago but I think that was a crop issue.