So what do you do when your cat aids chicken escapes? Every time I come home, she's let them out again, and she just sits with them and walks with them while they are on the floor. Sometimes I come home just to chicken poo on the carpet.. she has put them back in their brooder and then she sits there and looks at me like..."What?"
Hens go broody when you don’t want them to… and won’t go broody when you do.
I would put something heavy on top of the screen so that the cat can't flip up the lid and abet in the escape of your chickens. I put a book, piece of 2x4, etc on top of ours...it does the trick.