all I can report is what's going on here
the hens we "inherited" from the tenant are, as far as we can tell, the offspring of a rooster bred for cockfighting ... at least that is what most of the wild chickens are, here, and according to the tenant, most of these just "appeared", decided they liked the property, and moved in permanently
three more-or-less bantam-sized hens, all with white head and neck laced with black; shading to blackish-brown laced with black ... and oh boy are they good mummy-hens, they teach the chicks to scratch everything from the git-go; they defend the chicks fiercely from the wild and tame cats, are definitely still pretty wild (will let me get within a couple of feet, then flee)
so your dad may have SOME truth in his idea that hens which produce Mexican fighting chickens are good hens -- but so are many other breeds, as you'll see from reading the archives here
by the way, a couple of the cockerels, just (finally !! ) out of the peep-peep-peep stage, are doing the evil-stare-and-flapping-belly-bump routine, so I am SURE that the gorgeous roo (see my avatar) is papa ...
said cockerels will be going to a new home in a couple of weeks ... roo may be going too (tenant in neighboring house would rather not hear him every morning, and with nine fluffy-butts and broody hen sitting on nineteen eggs, I think we'll have enough chickens for awhile !
Candy