wonderful!
With previous hatches, I've found a good roo will also step up when mum abandons them at 6+ weeks, and wander round with them for the next week or so till they adjust (and/or recognize him as a friend and protector), so that might be something else to look out for with your...
It's a real blessing to have a good roo; he stepped up here when mom shot off to the grown-ups' food bowl so fast the chicks couldn't keep up, and it took her a few minutes to realize that they weren't with her and come rushing back in a huff!