I have a small piece of 2x3 in front of my nesting box to use as a step and I have a 4 foot roosting bar on the other side if the coop. 2 nights ago I noticed the hens were roosting in the nesting box. So last night I closed off the nesting box and sure enough they wanted to get in the nesting box but couldn't. So they stayed on the "step" that helps them get in the nesting box. Is there anything I can do to get them to use the roosting bar? It's about a foot off the coop floor and by a window. Could the window be a problem? I even put one of the hens on it yesterday so she could see what to do but she wouldn't go back on it.