Perches are a fundamental behavioral need for laying hens, enabling natural roosting behavior and reducing floor-level aggression. Access to perches is a key differentiator between cage and cage-free welfare.
Perch access addresses one of the most fundamental behavioral needs in laying hens. The drive to roost elevated off the ground is so strong that hens deprived of perches show frustration behaviors and compete intensely for any available elevated surface. Battery cages represent total deprivation of this drive for the entire productive life of the bird. Enriched cages and cage-free systems with adequate perching space allow expression of this behavior and reduce nighttime crowding and aggression on the litter floor. Perch design, placement, and availability ratio per bird are all management details that significantly affect whether hens can actually benefit from this provision in practice.