Enriched cages replaced barren battery cages in the EU in 2012. While a welfare improvement, they still leave significant natural behaviors unmet and remain controversial.
Enriched cages represent an improvement over barren battery cages but fall far short of what laying hens need to express natural behavior. The provision of a nominal nest box, perch space, and scratch area does not compensate for the inability to run, properly dust-bathe, or establish stable social hierarchies in the colony. Welfare science consistently shows barn and free-range systems support better behavioral welfare — though with their own challenges like keel bone fractures and disease spread. The ongoing EU review may result in a cage-free transition for EU laying hens.