Went out last night to put chickies to bed and found one dead in our next box. Really weird. No apparent injury. They were not acting strange and all have been their usual energetic selves. I will not cut her open as I cannot do that but wondered if I should put them all on an antibiotic just to make sure? I did notice a stool last week that was slightly tinged with blood (do not know what chicken had this stool-no one would tell me-a pretty closed beek flock I have) so did a dosing of Sulmet just to make sure. Nothing else unusual. If I should give them an antibiotic what would you guys recommend? I am fairly new to this and have not had any sick chickens until now. By the way. The chickie was about 1 year old. A golden sex link. They free range during the day. Thanks so much. We will miss her but I know that is part of life and I don't want to lock them up. They enjoy free rangeing so much and so far we don't have a predator problem.