The space allocated to each laying hen determines whether she can perform natural behaviours. Research consistently shows that currently permitted minimum spaces are insufficient for hen welfare.
Space allocation is not merely about comfort but about whether hens can perform their repertoire of natural behaviours. Wing stretching, preening, foraging, dust bathing, and escape from dominant birds all require space. In colony cages, insufficient space means these behaviours are permanently impossible or severely restricted. Hens that cannot escape aggressive cage-mates suffer ongoing stress and injury. Research using preference tests demonstrates that hens value space highly and will work hard to access it. The minimum legal standards fall far short of what research shows hens need.