Laying hens have complex behavioral needs including nesting, dustbathing, perching, and foraging that conventional cage systems fundamentally fail to accommodate.
Laying hen welfare is the most studied area of farmed animal welfare, revealing behavioral needs so fundamental that their systematic deprivation in conventional caging constitutes a major ethical problem. Nesting motivation is so strong that hens experience measurable distress when unable to perform it before laying — the behavioral evidence is equivalent to forcing a human to urinate in public. Dustbathing, perching, and wing-flapping are similarly strongly motivated behaviors whose deprivation causes frustration. The EU cage ban and global cage-free transition represent meaningful progress, though cage-free systems introduce new welfare challenges including keel bone fractures from falls and aerial access. Optimizing cage-free system design to minimize injury while enabling behavioral expression is the current welfare frontier. Consumer choices driving the cage-free transition have had real welfare impact at population scale.