I have a 10 wk barred rock, an 8 wk RIR & 2-8 wk EE's, I lost an EE at 2 wks and an EE at 4 wks old. fIne one night and dead the next. my barred rock was listless & had difficulty standing last week. I took her to vet and he said her crop was empty, that she wasn't eating. BUt she is eating, i see her eat and she gets fresh food twice a day and fresh water on a nipple system every other day (Now with vitamin at vets suggestion). he forcefed the barred rock and put all of them on antibiotics twice a day thinking it might be bacterial. There is no sneezing. The rir and ee seem small to me and all three feel thin. I am feeding a starter feed, a TExas all natural, no gmo feed. Do you think it could be the brand of food or the fact that I need to change them to grower feed. We are in San Antonio, TX if that is a question to anyone.