One of my hens has been broody, but we have no rooster. I got 2 chicks from the farm store and I tried to place them under her last night. I removed the two eggs she was sitting on at the same time. It didn't work out very well. She got off the nest and tried to fly up out of the box I set up for her. I'm not sure how old the chicks are but they are still small and have tiny feathers on their wings. Is there an age limit cut-off for the chicks in order for this to work? They are Silver Laced Wyandottes. The broody is a Black Australorp. Has anyone tried this successfully and do you have any advice? I'm wondering if maybe she hasn't been setting long enough. I think it's only been a week.