Everyone has different experiences and thats what makes this such a great site. I have had rabbits running loose with chickens and eating the chicken feed with no problem. In fact a number of breeders keep chickens as do I to keep the flys and bugs down. What is important though if you do let them run together is to have a source of fresh water for the rabbit that the chickens cannot poop in. Also give the rabbit fresh hay (not alfalfa) occassionally and this will help keep its digestive tract regulated. Again, I have had no issues but that is not to say you wont. Some rabbits are sturdier than others and some are not..