This forum runs the gamut of those who would shoot anything that crosses their chckens path to some very kind people who catch and release mice. I must admit that other then my wife, I have never heard of anyone catching and releasing mice. Where we live the Florida mouse is considered a rare and endangered species and every mouse that we find in our garage or our trailer seems to be ( at least from my wife's perspective) that rare and endangered mouse and she gently catches them and carries them off onto the adjoining field where they regroup and head back to our garage. To me most mice are just considered pests, sort of like mosquitos, to be eliminated or, at the very least, kept out of my living quarters. I would suspect that if a mouse was unfortunate enough to end up in our chicken run that it would quickly become lunch.