We just built a coop for our chickens. They have been in it for about 2 weeks. Yesterday we finished the run and I figured as soon as I opened the door they would run out. They were always trying to get out of the "human" door when I would go in. I've had their door open for about 3 hours now and they have only ventured to the bottom edge of the ramp and then they go back in. I just looked out and they were all back in side again. I've thrown some food in the grass hoping it would entice them out and they came out and pecked and went back in. I even found a worm and put it on their ramp and one came out and grabbed it and went back inside. Will they eventually come out on their own or do I need to force them out?