One of our Buff Orpingtons went broody about ten days ago. For the last five days we've had her in a milk crate elevated on sawhorses so there's plenty of airflow under her. During the day, we take her out and let her free-range in the backyard for a couple of hours (she can't access the nest from the yard.) We've also tried putting her underbelly in some cold water (got that advice on another forum). So far we've seen no change at all in her behavior. She sits happily in the milk crate with her feathers all puffed up just like she was in the nest. Separating her from the next appears to have done nothing at all. Anything else we can do, other than letting her hatch some eggs?