Predators are creative in their own right. I had a hospital cage, in the dog run for recovering birds... I watched a tiny little hawk pickup corn fines left behind by the deer (yes I feed my deer) and sit atop the cage and drop them out away from the cage. When the bird in the cage reached out to grab some she left with its head.
A game cam is a great investment for your sanity. I've seen raccoons open more than one latch on the game cam. Before that I was convinced that I left the door open. Predators are good at what they do and everyone loves chicken.