Back to the predator topic and a short story;
Way back in my West Va. years I worked with a guy who decided he wanted to try egg selling as a side gig. (We worked as carpenters for a local home builder).
Clarence kept detailed records of his cash outlay and income, Coop expenses, wire, biddies, and feed, balanced against income produced from his egg sales.
At some point his usually dependable hens quit laying. Clarence went into detective mode and eventually found the cause to be a fair sized snake lurking in the rafters of the coop. After a bit of thought; Clarence retrieved his shotgun from the house and blasted the snake.
Solved one problem but, of coarse, blew a hole in his coop roof that needed a cash outlay, and some labor, to repair, and the hens, (in the coop at the time), never laid another egg.
Clarence had yet another side gig as a preacher and he told this story on himself; so I believe it to be true.
And if it ain't the truth, it oughta be.