l find its funny that cage piggys tened to go to toilet any were,but free range all go back to their indoor toilet ,which is one of the 4footx 2 foot x2foot green and grey garden shedbox ,that is attached onto their main 10foot run.no matter were they are in the gardens they will return to their toilet room.
l started free ranging them 3 1/2 years ago because l have 1/3 of an acre of ground,and did,nt want to lawn mower the grass because of all the frogs and slow-worms in it,so let them eat the grass and weeds adding their waste to help the grass grow. but they dont,.it must be what they do in the wild as they are preyed animals. so that they can,nt be tracked down,to become dinner.think its a bit how battery hens that have never seen sunshine react when they are give freedom ,will start digging and foraging,and dust bathing. its in them to do it.survial.