Our chicks are about 2 months old, and so far haven't seen them even attempt a dust bath. They have shavings in their coop, and they get to run around the yard for a bit each day. There are some woods where they scratch in the leaf litter, but no attempt to dust bath. Do I need to make a dugout somewhere? Also, they like to climb into a bush I have and hang out. Tree climbing chicks? Really?