I went out to clean my girls' poop hammock this morning and noticed there was some bloody and mucous-like stool on the hammock. They were/have been given medicated feed, go out in their chicken tractor during the day, and get the occasional treat (grain mixes and the like). I have two girls who are getting close to laying (any day now) and everyone is acting normal otherwise. Should I be worried?? Advice on what I should do??