We have a ramp the goes down to the ground outside the coop door to their inclosed run. They will not go near it. We have been taking them out of the coop and placing them in the run. I know they need to learn to use the ramp to leave and enter the coop. We've tried treats, didn't really do much. They are 5 and 6 weeks old. Any tips? Just leave the door open to the ramp and let them figure it out? They loved being outside.