Mine are wonderful foragers, about half of my girls were broody this spring, 8 out of 15 to be exact, and I let three hatch clutches. They each had an incredible hatch rate! Only lost one egg out of 36. Now as far as mothering I am not sure, I didn't let my mommies keep their little ones, thy hatched in March and it was FAR too cold for little ones to go out with mommas. They lay alot of eggs, especially if lit in the winter .
We actually just took 8 to butcher yesterday and the girls dressed out at 4pounds and our boys dressed out at about 6. Mine free range in a large fenced pasture. They, mostly, stick close to their house but if there is extra water from rain, forget it. That is immediately where they go to dig up yummy things and play, this was often across the road, hence the pasture fence for us. I love my Ancona's I highly recommend them as a breed. They can be skittish if not handled, but if they are properly bribed they are very friendly. In the summer months ours sustain entirely on pasture and forage and are better for it. Get some you will love them!