Just bite the bullet and do like Old Hen suggests.
Chickens are supreme creatures of habit. It takes forever to break them of an established habit, and it also takes a while to establish a new one. But you can be sure they will form the new habit of going into the new coop.
Close off the old coop. It would be best to place a barrier in front of the old coop so the chickens can't see the old coop, like a tarp perhaps, and it will also serve to prevent them from flinging themselves against the door of the old coop in a frantic effort to get in at night. Yes, mine have actually done that, and injuries can occur.
Since it's so darned hot, I wouldn't coop them up as is the usual method of establishing hens in a new coop, but place them inside at night or lure them inside with treats. Chickens are very responsive to treats and it can be a great incentive for learning the new habit.
Chickens are supreme creatures of habit. It takes forever to break them of an established habit, and it also takes a while to establish a new one. But you can be sure they will form the new habit of going into the new coop.
Close off the old coop. It would be best to place a barrier in front of the old coop so the chickens can't see the old coop, like a tarp perhaps, and it will also serve to prevent them from flinging themselves against the door of the old coop in a frantic effort to get in at night. Yes, mine have actually done that, and injuries can occur.
Since it's so darned hot, I wouldn't coop them up as is the usual method of establishing hens in a new coop, but place them inside at night or lure them inside with treats. Chickens are very responsive to treats and it can be a great incentive for learning the new habit.