Laying hens have strong behavioral motivations including nesting, dustbathing, perching, and foraging that cannot be satisfied in conventional cage systems, causing significant chronic frustration.
Laying hens in battery cages experience chronic frustration from inability to express fundamental behavioral needs. The nesting motivation before egg laying causes visible distress in caged birds unable to find a suitable site. Dustbathing and foraging drives persist even in birds that have never experienced these behaviors, demonstrating their deep biological basis. Cage-free systems with adequate litter, nesting boxes, and perches allow hens to express these behaviors, substantially improving their welfare even when other challenges remain.