You may well have seen the offspring and didn't realize it. The offspring from a Royal Palm tom and a Bronze hen would be Bronze toms and Narragansett hens.I have the opposite issue, a wild hen that flies in every year around April. I assume the wild boys have all been hunted and my tom gobbling calls her in. We lovingly refer to her as Elizabeth Warren My hens are usually inside sitting, so it makes an entertaining afternoon for my tom. I wish I could see the babies, half wild half RP, but I havenāt yet.
I deworm my flock a couple times a year and check for lice and mites often, which can be brought in by the wildlings.
She is very hard to photograph, but I try to sneak a pic every time