I recently save a poor hen that was mistreated, living in a cage stepping on her own pop. She was the only hen in the small cage with 6 rooster. Long story short, I bought her, clean her wounds on her back, and let her roam free in my backyard with my other hen. Two week later she starts laying an egg on a nest I built for some ducks, but she decided to make it her nest. I really don't know if they are fertile. But it been like this she lay one day the in two day lay another one, then again. Now she has 9 eggs but she never sit on them unless she goes to lay another one. Well my question is, is it okay for the eggs to be left alone like that. I prefer to never bother her nest, but I was wonder how does the whole, hen laying egg and hatching chick work?