I've built a 2 story silkie coop/run... the run is directly below the coop. My silkies have been in there for a little over a day now. They all figured out how to get down to the run but they haven't figured out how to get back up the ramp. Their food and water is above in the coop. The ramp is a 2 x 6 and is at near a 45 degree angle. I have 1/2" thick cleats nailed on every 3 1/2 inches. I know, pics would probably help but it is still dark here. Is my ramp too steep or will they eventually figure out how to get back up the ramp?