The transition from conventional battery cages to enriched colony systems or cage-free housing represents the largest welfare improvement in the history of commercial egg production. Understanding progress and remaining challenges matters for advocates.
The transition away from conventional battery cages represents the most significant reduction in farm animal suffering in history by sheer scale of animals affected. Hundreds of millions of hens globally have moved to systems that provide, at minimum, access to nesting boxes and perches. However, the welfare improvement from battery cage to enriched colony system, while real, falls short of meeting hens' full behavioral needs. The move to cage-free systems provides substantially more behavioral freedom but introduces management challenges including higher cannibalism rates and disease transmission in poorly managed flocks. The welfare trajectory is positive, but continued advocacy is needed to maintain corporate commitment momentum and ensure cage-free systems are managed to high welfare standards.