https://www.backyardchickens.com/forum/viewtopic.php?id=368796&p=1
You might try this thread...I didn't read all the responses- maybe there is something there for you?
I had a Golden Campine once that survived a cat attack by going vertical and flying away. I was simply amazed as I watched from my kitchen window, then of course ran out there. They lay white eggs.
Raccoons are crafty though and even work in teams, I have read.
I will be subscribing to this...