Beautiful birds! When I'm rooster free, which is "usually", one of my hens picks up rooster duty. Invariably. I have a golden Sebright bantam hen that lays eggs, struts around and crows constantly! She's pretty good at it, too! Lol. One of my americana girls has also displayed roo behavior very often. She stopped laying, however, during her gender transition. When i added a roo for breeding, she fought him to a standstill for about a month. Then went right back to being a hen!
I can't offer an opinion on gender, sorry. They all look like hens to me, because I'm notoriously bad at breeds and sexes but like to err on the side of optimism! (Not a rooster fan)