Hi! For the last 5 months 2 of my chickens have been sleeping in the trees. I have 2 pullets that have slept in the coop since they hatched and have stayed there, and I just added another older pullet to the flock today and she has gone straight to the trees this evening too. Is it ok for them to be there? I live in New Zealand so we don't have any predators. Should I just let them stay in the trees? Should I put the new pullet in w the others in the coop so that she forms that habit? Thoughts?