Cattle dog Mom
Songster
Javas are slow to mature though. When I got mine, he said the hens didn't mature until 18 months or so. And judging by the eggs size from mine, he wasn't wrong.The Australorps from the same order are mostly laying large already.
I have Mocha in the broody breaker. I wanted her to get to finish growing up before she sat on eggs. She should be promising though -- she defends her nest viciously.