My chickens are getting old. Awhile back, I took down their tall ladder roost and made something lower to the ground. It totally freaked them out. I had to change it back. Today, I was letting my lame hen back out with the others and put a long board ramp at the entrance, so she could get up and down to the coop better. But wouldn't you know it. They're all outside and won't go in. I've give them a little while, then I'll probably have to figure something else out. Fortunately, it isn't real cold out (46F). Any suggestions as to how to get them to use it? I threw some seed on it, but no takers. I've shaken the scratch can and called out to them (which usually brings them running).......but no dice. What to do?