We moved our 20 meat (RC) chickens outside at the begining of the weak. Everything has gone fine but hubby commented he smelled a sick smell. I did not smell anything but chickens. We move them every night and take food away, so mornings are a feeding frenzy. This morning I found a dead chick in a corner. 2 did not run to feed. I think what was happening was 1 was standing guard over another because as I watched, another chick came over and took over while the first one went to get a drink. I see what looks like blood on 2 of the chicks but see no one bleeding and no wounds. No sign of anything getting in with them. No holes, no pieces of another critter, no fur, nothing. I did see 1 chick poop and it was liquid and looked mauve in color. These guys were supposed to have been vaccinated for everything so I don't get it. No body parts missing. Any clue what's going on?