Lock them in the new coop 24/7 for a week or so....then they'll 'home' to the new coop and go back there at night.I see this question is old - but I was curious - how long did it take your chickens to acclimate to their new home? We built a new coop that is three times larger and run is 10x larger and my chickens did not use their house last night (we had a pretty nasty thunderstorm!) I was shocked this AM to look in their house and see there was not a single drop of poop to clean - ie - chickens did not use house overnight. They can not get to their old coop now, so hoping they start using the "mansion" my son and I took a month to build!! Thanks!