I have 4 pullets in a small coop with a small enclosed run. I open the door every day to let them out into a larger run, but they rarely go! It's been hot and humid, but they tend to stay in the enclosed coop. There is plenty of shade in the big run, so I don't understand why they prefer to be in the dark coop. They eat and drink, but then return to the coop. They don't seem to be afraid of me. What's up?