Battery cages confine egg-laying hens in spaces smaller than a sheet of paper, causing severe welfare deprivation for billions of birds globally.
Battery cages are considered by animal welfare scientists to be among the most welfare-compromising farming practices ever devised. The complete inability to perform basic natural behaviors causes chronic frustration and suffering. Enriched cages provide marginally more space and some amenities but still severely restrict movement and natural behavior. Cage-free systems provide far better welfare outcomes, though they present their own challenges. Scientific consensus strongly supports phasing out cage confinement for laying hens.