If the nesting box is flat on top, then you need to taper the roof so they can't stand on it. It should be about 36" off the floor. a 2x4 flatwise would be ideal for balance and keeping their feet warm in the winter. Good luck.
Hi, I'm new to BYC, however have had chickens before. I've got a new flock of 5 Australorpes, approx 1-1/2-2 months old. They are in a large fenced in area, coop is in the middle. I
like to close their coop door at night due to predators, however they will not go back into their coop at night. They have been in the fenced area for 2 weeks now. The first week when coop door was opened, they did not venture outside, this week (#2) they are all outside but at night, I have to go out and put them back in the coop and close the door. The last flock we had went in every night at dusk. Any advise? Thanks Lisa