Cage-Free Egg Production: Welfare Progress and Remaining Challenges

The global shift from battery cages to cage-free egg production represents significant welfare progress for laying hens, but cage-free systems have their own welfare challenges that require ongoing attention and management.

Key Facts

Over 400 million laying hens in the US, and billions globally, have been kept in battery cages providing less than an A4 sheet of space
Major food companies, retailers, and egg producers have committed to cage-free transitions — over 2,000 corporate commitments made
The EU banned conventional battery cages in 2012; enriched cages are permitted but face increasing restrictions
Cage-free systems allow hens to walk, spread wings, lay in nests, and engage in natural behaviors denied in cages
However, cage-free systems have higher rates of feather pecking, cannibalism, and keel bone fractures than well-managed enriched cage systems
Keel bone fractures affect 50-80% of laying hens in cage-free systems due to falls and collisions
Proper management, including beak treatment, lighting programs, enrichment, and flock density, significantly reduces cage-free welfare problems
Consumer demand and corporate commitments continue to drive the transition globally

Welfare Considerations

Cage-free systems represent a genuine welfare improvement in terms of freedom of movement and behavioral expression, but are not welfare-perfect. Keel bone fractures are a critical unsolved welfare problem — the majority of cage-free hens suffer painful fractures from falls from elevated perches or collisions. Feather pecking outbreaks can cause severe injury and death. However, well-managed cage-free systems with appropriate enrichment, lighting, and flock density achieve better overall welfare than battery cages on most metrics. The transition to cage-free is a step forward, not a destination. Ongoing research and management improvement is essential to address the remaining welfare challenges. Higher welfare certifications like RSPCA Assured require additional standards beyond basic cage-free.

What You Can Do

Choose cage-free or higher welfare certified eggs over conventional eggs
Look for certifications beyond "cage-free" — Certified Humane, Animal Welfare Approved, or RSPCA Assured set higher bars
Reduce egg consumption and shift spending toward higher-welfare products
Support corporate cage-free commitments with positive consumer feedback
Advocate for farms to adopt best practices in cage-free management including enrichment and injury monitoring
Support research into keel bone fracture prevention in laying hens