My silkies have been out in their new coop for over a month and I put a ramp out for them to come out. They will come down it most of the time. Some times they will come down half way and then jump the rest of the way. But, I can not get them to go back up it at night. I have tried putting food on it, tried placing them on it to go back up but they just turn around and go back down. Maybe its too small. Its 10 across, it's 4 feet long so I know it's not too steep. Is there anything I can do to get them to go up it? When I go out right after it gets dark they are all cuddled up together on the ground.