After having a flock of laying hens for years, I decided to add a small flock of game chickens (aquired from a friend as chicks) They are currently five months old and I free range them. My problem is they are roosting in trees at night and not the coop. They seem none the worst for wear, and I have lost none to critters. But I get concerned with it rains all night knowing they are out in the elements. Any suggestions?