I thought roosting was a natural instinct for chickens. I just got started with this chicken hobby. I have a small coop and just started getting a few eggs from my pullets. They go into the coop to lay, but at night they stay out of the coop and just stay in the run or pen area. They just scratch a spot in the dirt and the four of them just kind of snuggle up for the night. The coop has roosts for them (dowel rods) and previous owners of the property had chickens that roosted there. Even the other day when we had a rain shower, those girls just squawked and fussed, but didn't go into the coop. This seems like weird behavior. Any suggestions?