Enriched colony cages were introduced as a welfare improvement over barren battery cages for laying hens. Understanding their welfare limitations informs ongoing advocacy for further reform.
Enriched colony cages represent an incremental improvement over barren battery cages but fall well short of meeting laying hen behavioral needs. The perch, nest box, and scratch area address some behavioral frustrations but cannot provide adequate space for wing flapping, running, or full expression of natural repertoire. Keel bone fracture rates, a key welfare indicator, remain high. Barn and free-range systems provide significantly better welfare outcomes. Consumer and legislative pressure for further reform beyond enriched cages remains important as the industry standard in many markets.