Okay, forget my question on your post I just read, what is a chook? It's a chicken, now I got it.
Ravens and crows can be a real pain in the ass. Robin's cousin has lots of chickens and complains of the same thing. Since we get all of our eggs from her, I'm ready to stand guard.
You always put in a sprinkle of humor in your posts, always worth a laugh or two.
The Sarong sounds like it's working. I know that the ravens and blackbirds around here are very skittish, flying off when they see the littlest movement.
I like your hubby's possible solution, and if it doesn't work it will look really neat in the garden.