When they are small, they're usually in a brooder somewhere in your house or garage. (I've turned kiddie pools into brooders on my dining room table, used a bathtub, etc.) The birds don't go out until they are fully feathered and bigger. I have had squirrels try to steal my eggs, but no snakes. (Not that it can't happen.) I have seen fully grown chickens chase, catch, and kill snakes. They don't call them tiny raptors for no reason! LOL
I can't stop looking at Cackles McGee.