Providing effective enrichment to laying hens improves welfare by enabling natural behavior expression. Understanding the evidence base helps advocates push for meaningful standards over token compliance.
Effective laying hen enrichment is not about providing any enrichment — it is about providing enrichment that satisfies the specific behavioral motivations hens have evolved. Hanging chains satisfy nothing; they are not preferred by hens and have no effect on injurious pecking. Loose dry substrate that hens can scatter, flick, and bath in satisfies dustbathing motivation. Elevated perches at appropriate height allow roosting. Enclosed nest boxes prevent social interference during egg laying. Provided foraging substrate — scattered grain, chopped brassica leaves, hay — occupies hens in normal foraging behavior that reduces the frustrated redirection of pecking toward flock mates. The cascade of welfare improvement from effective enrichment — reduced feather pecking, lower stress hormones, improved bone health from movement and perch use — demonstrates that enrichment is not supplementary to welfare but central to it.