Advice needed! I have 5 chickens that are approximately 4 months old. They've been doing great going in their coop each night - I let them free-range by day. Last night, a couple of them decided to roost in the trees instead of going in the coop. Tonight, I only found one in the coop when it was time for bed. The rest were all in the trees. Why the sudden change?? The only thing I can think of is that we've had some pretty violent thunderstorms the last few nights, and maybe it scared them from wanting to be in the coop?? How can I remedy this? I know roosting in the trees can't be safe...