▁the ▁meaning ▁of ▁that ▁provision ▁are ▁even ly ▁distributed ▁throughout ▁the ▁whole ▁open - air ▁run ▁with ▁at ▁least ▁four ▁sh el ters ▁per ▁hect are . ▁ ▁Otherwise , ▁egg ▁far ming ▁in ▁EU ▁is ▁class ified ▁into ▁ 4 ▁categories : ▁Organ ic ▁( ec ological ), ▁Free ▁Range , ▁Bar n , ▁and ▁C ages .) ▁The ▁mand atory ▁lab elling ▁on ▁the ▁egg ▁shell s ▁attributes ▁a ▁number ▁( which ▁is ▁the ▁first ▁digit ▁on ▁the ▁label ) ▁to ▁each ▁of ▁these ▁categories : ▁ 0 ▁for ▁Organ ic , ▁ 1 ▁for ▁Free ▁Range , ▁ 2 ▁for ▁Bar n ▁and ▁ 3 ▁for ▁C ages . ▁ ▁There ▁are ▁EU ▁reg ulations ▁about ▁what ▁free - range ▁means ▁for ▁lay ing ▁h ens ▁and ▁bro ilers ▁( me at ▁ch ick ens ) ▁as ▁indicated ▁above . ▁However , ▁there ▁are ▁no ▁EU ▁reg ulations ▁for ▁free - range ▁p ork , ▁so ▁p igs ▁could ▁be ▁ind o ors ▁for ▁some ▁of ▁their ▁lives . ▁In ▁order ▁to ▁be ▁class ified ▁as ▁free - range , ▁animals ▁must ▁have ▁access ▁to ▁the ▁out do ors ▁for ▁at ▁least ▁part ▁of ▁their ▁lives . ▁ ▁United ▁Kingdom ▁▁ ▁P igs : ▁Free - range ▁pre gn ant ▁s ows ▁are ▁kept ▁in ▁groups ▁and ▁they ▁are ▁often ▁provided ▁with ▁st raw ▁for ▁bed ding , ▁root ing ▁and ▁che wing . ▁ ▁Ar ound ▁ 4 0 % ▁of ▁UK ▁s ows ▁are ▁kept ▁free - range