Mine roosted in tree before we got the coop done. I could only catch one the night it was finished and an owl took one out of the tree. They don't know what is best for them. Too bad, I suppose that is why they hatch out so many at a time, everything eats chickens.
I'd strongly advise lock em up for a few days till they forget the tree.
Oh, yeah, after the owl broke meenies neck, eenie mini and moe are always the first ones in the coop at night, no more arguments.