I had a problem getting8 of my 16 at the time to sleep in the coop. 10×12 was not to small. 2 12' long roosting poles. Finally after not letting them out of the run for a few months they were forced to sleep there and got used to itOut of curiosity, how many birds total and in what type of secure quarters are they housed? Size, type, construction, etc.
None of my birds have ever roosted anywhere but inside the chicken house. They ALL go in every night.....always. But it is a Woods house, so is comfortable for them and appropriately sized for the number of birds I have. Home sweet home and they like it in there.
My daughter's first flock refused to use the house they were given. It was a hand me down freebie coop built by some well meaning folks who had no clue what a chicken coop was supposed to be. Too small, and a poorly constructed sweat box death trap. Bottom line is when allowed to do so, the birds refused to use it....voting with their feet so to speak.....and took to roosting on top of the playground equipment, sheds, etc,.......basically anywhere but inside that coop. They were also allowed for free range. As a result.......they all were taken by predators. I think she might have gotten 1 or 2 eggs per bird before they were gone.
I would expect that birds that free range during the day and roosting in trees at night in a predator laden area are not long for this world.......it would be a miracle if it were anything else. No pellet gun, shotgun, rifle or any amount of trapping is going to change that. The predators are going to win that game 99.9% of the time.
Some are stubborn