Enriched colony cages represent a partial welfare improvement over conventional battery cages but retain significant behavioral restrictions that limit their welfare performance.
Enriched colony cages provide some improvements over conventional battery cages - hens can express limited versions of natural behaviors. However, the enrichments provided are often inadequate in quantity and quality: perches too low to allow escape behavior, scratch areas too small for meaningful use, and nest boxes shared among too many hens. Most welfare scientists agree that enriched cages represent insufficient welfare improvement. The policy momentum toward cage-free systems reflects this scientific consensus, though cage-free systems require management attention to achieve their welfare potential.