I've read lots of previous posts on stopping a hen from being broody, and I've tried throwing her off the nest several times a day, putting ice under her, blocking off the nesting boxes... We finally put her in a wire cage, raised off the groud nearly a foot. How do I know when she's ready to come out and not keep sitting? We already have 3 hens that hatched chicks and just cannot handle any more or I would put an egg or two under her.