Looks like it could be a boy - comb and wattles are turning red, legs are on the thick side, and it even looks like he has the beginnings of sickle tail feathers. Do you know his age?
Got a Barnevelder Rooster, great bird awesome bird. The reason reckon it's possibly a rooster is the long legs in ya picture, the third pic, Barnevelder Rooster looks like it's got black pants on at times, so does my Barnevelder.