hello! My 9 month old hen has been acting broody for a week or so, laying on her and her sisters eggs and spending most of her day there in the nesting box. I can remove her but she goes right back in as soon as she gets access. I believe she is an Araucana. She seems healthy. Is this unusual for a hen her age? I was under the impression hens don’t go broody so young. Thanks so much for any advice!