yes, cd thing does work..even on cloudy days. I have a pair of hawks who live close and never have they gone inside the run. Nor do the owls. But of course, chickens are locked up at night.
sorry, I just saw this thread. I fixed up my run like recommended by Speckled Hen here is a pic of her runs on page one of the following link to the thread
https://www.backyardchickens.com/forum/viewtopic.php?id=64
I have not lost a single chicken with this method over my run. At first I used...