My little flock is five weeks old and I just moved them into their new coop this week. It has been nice and warm this week so they have been outside a good part of the day. The trick is getting them into their house in the evening. I always end up chasing the last one around the pen. The first ones are perfectly happy to come to me. I can't seem to pick up two before one gets restless. How do I train them to go in the house?