The global shift toward cage-free egg production represents the largest single welfare improvement in farm animal history. Understanding the nuances helps advocates and consumers support genuine progress.
The cage-free transition is a genuine, large-scale welfare improvement — but not a perfect solution. Battery cages prevented bone fractures from falls but denied hens every natural behavior: perching, dust bathing, nesting, wing-spreading, and foraging. The behavioral impoverishment of cages causes chronic frustration and learned helplessness. Cage-free systems allow expression of these fundamental behaviors, dramatically improving multiple welfare dimensions. However, poorly managed cage-free systems — high density, inadequate litter management, insufficient perch access, bright constant lighting — can produce welfare challenges including increased mortality and injurious pecking. The evidence consistently shows that well-managed cage-free systems outperform both battery and enriched cages on welfare outcomes. Corporate commitments must be backed by third-party audit to ensure genuine welfare improvement rather than mere label change.