I have two other pullets that are the same age; they are brooding their third clutch of eggs right now. I have silkie hens that brood just as often; a mutt hen too and the same with her.
Another 8 month old. She recently weaned her second set of chicks (above) and, again, is brooding eggs in the same cereal bowl she has used twice in the past.
A picture of the hen sitting on her first clutch. If I took a new picture of her on the third clutch it would look the same.