my roo really started to get better at his job this spring when they were closer to a year old. He will call them back if they cross the road, but they usually dont listen. He will let the babies come up under him to get treats, I saw this today, when the hens are pecking them out of the way. And a couple weeks ago when my moms dog scared 2 and they flew into the weeds to hide he was very concerned and stood by the door calling them over and over. I am very proud of him.
But I should add, last fall they showed him who was boss by plucking his tail feathers while he slept. Every day he had less and less poor fella, they eventually did stop when they were all out but never started again when they grew in.