Our ex battery hens just have the door open in the day then shut up at night it was all a bit of a rush as had 1 days notice we were getting them,got a 6x4 shed from b and q for £89 then as my dad is over 60 got an extra 10% off,see now though they have gone up in price,anyway hens loved it lots of space we put breeze blocks in for them to perch on but they would all sleep on the floor,only mod we made was to remove the perspece window as in the morning it was very hot in there,we replaced it with some chicken wire over the window space and if rain was forcasted a piece of plastic to put over it.In furture would always buy a shed.