(please see my other post in the emergenicies, diseases, and cures thread. it has to do with this) My chickens have been eating the occasional mouse that tries to steal their feed. During the summer they catch and eat lizards. I've never had a problem with it, since the eggs taste better around the times they eat the critters. But now one of my girls ate a whole entire mouse (except for the pelt) and she is having bloody poop (see other post in emergencies, diseases, and cures thread). Do your chickens do this? Why are mine eating little critters? The mouse they eat are small field mice, not the average Petsmart mouse. Small little grey brown things. I don't think they are lacking proteing in their diet. I feed them scratch, feed, various veggies and fruits, yogurt, worms, nightcrawlers, and dried mealworms.