Even the place that sells chicken diapers says it's bad for chickens to keep them indoors for long periods of time. " Firstly, it will make them unhappy. They prefer to be outside. Keeping a chicken inside your home permanently prevents them from expressing their natural behaviors. It is very important that chickens have several hours of free-ranging each day for their physical and psychological well-being. Chickens enjoy foraging in a yard for tasty snacks such as bugs and plants, which is not possible in your house. (At least, we certainly HOPE it's not possible for them to forage bugs and grass from your floors!) Instead, indoor pet chickens may eat bits of carpet or other detritus that is not good for them and could cause them serious health problems "