Oh boy, do I know about chickens in trees. LOL
Their coop was in a fenced yard and under extremely large entwined Post Oak trees.
I let them free range in the pasture with Babe and Rosie. The only time any were snatched by wildlife - i.e., Coyotes.
Once "I" marked 100 % of my property line it didn't happen again. But I also howled my displeasure that night and she answered. I was shocked. Not sure which if either worked but no more stolen chickens.
It sounds as if you are nearer the woods itself than I was.
Good luck getting them in on time - or sooner with the shrinking daylight.
Love All Life, Thank You For Posting! :)