I'm just curious if this is normal or not. My chickens (2 silkies, 1 RIR, 1 unknown) have to be forced out of the coop everyday. They will stay out for an hour and then get back in the coop. They have 6 acres they could roam around on, but won't leave the coop! I put plenty of food and water outside of the coop to encourage them too. Thoughts?