An egg laid by hens housed in barns where they can move freely indoors, a production system between caged and free-range. Barn hens live in large sheds with litter floors, perches, and nest boxes, able to walk, dust-bathe, and socialize, but without outdoor access. The system answers welfare concerns about battery cages while avoiding the disease and predation risks of outdoor ranging, and it typically costs less than free-range production. Egg labeling laws in many countries define these categories precisely, so barn egg on a carton guarantees the housing standard behind it. Nutritionally the eggs are equivalent to other systems; the difference is entirely about hen welfare and consumer values, which increasingly drive purchasing decisions.