I've got a standard cochin who is acting very upset that I took her babies to put in the coop (she's a house chicken.) Her 18 week old babies. She has NEVER stopped mothering them! One of her two "daughters" (she hatched someone else's eggs) is going to lay her first egg any day now by the looks of it, and her other one is rapidly catching up, yet this is their first night not sleeping smooshed under mom and getting called to + fed half the tastiest treats. She's been laying since they were 6 weeks old but never chased them off or started treating them differently. Not even when "dad" quit - he's a tiny rooster who she HATED, but he insisted on sharing brooding duties, even warmed the babies while they still fit under him. I figured I'd just take them when she was done, but at this point it looked like she never would be.
Anyone else have moms that have done extended tours of duty like this?
My silkie cochin mix hen tends to raise her chicks for a long time. She hatched a single chick back in January. She treated him like a chick even after he started mating with her. He went to a new home shortly thereafter.