Just an interesting observation - Seven of the thirteen Dark Cornish girls we got from McMurray have gone broody in their first year, with two of the seven repeating after a short time. I don't know what other people have experienced with this breed, but these girls are dedicated! Lol!
I have two from Meyer and one of them has gone broody twice in year (also her 1st year). I read that they can be good mother, so broodiness must not be that unusual with them.