Group Housing for Laying Hens: Welfare Benefits of Cage-Free Systems

The transition from conventional battery cages to cage-free systems for laying hens represents one of the most significant welfare improvements in modern egg production.

Key Facts

Conventional battery cages provide approximately 67 square centimeters per hen — less than an A4 sheet of paper
Battery cages have been banned in the EU since 2012 and are prohibited or phased out in many US states
Cage-free systems provide hens with the ability to walk, spread wings, perch, nest, and dustbathe
Multi-tier aviary systems allow vertical space use and provide perching at multiple heights
Cage-free systems have higher rates of keel bone fractures and feather pecking requiring careful management
Consumer campaigns and corporate pledges have driven cage-free commitments from major food companies worldwide

Welfare Considerations

Battery cages are one of the most welfare-compromising systems in mainstream food production. Hens that cannot spread their wings, perch, nest, or dustbathe are denied the most fundamental behavioral expressions of their species for their entire productive lives. Cage-free systems represent a genuine improvement in welfare — hens can express natural behaviors, move freely, and experience significantly less frustration. The welfare challenges of cage-free systems — keel bone fractures from perch collisions and feather pecking — are real but manageable with good husbandry. The overall welfare trajectory from battery cages to well-managed cage-free and free-range systems is strongly positive.

What You Can Do

Choose cage-free or free-range eggs as a minimum welfare standard
Support corporate cage-free pledges by buying products from companies committed to the transition
Advocate for legislative bans on battery cages in jurisdictions where they remain legal
Learn about the differences between cage-free, free-range, and pasture-raised egg production standards