Somewhere I read that coop windows should be a certain height above the floor to keep chickens from flying into them and breaking their necks. Of course, I read that after I installed the coop window about a foot off the floor (it's a coop on stilts). Has anyone else had the problem of chickens flying into closed windows? I'll be moving the chicks into the coop in the next couple days. Should I be concerned and hang a curtain or something? I'm also concerned because the roosts are the same height as the window. I'm wondering if they'll try to fly out the window from the roosts. Thanks!