Greetings everyone, I'm new to chickens, my husband is not but when he had chickens he never cared to handle them or love on them and give them names, and when it came to roosters it didn't matter because he lived in the backwoods of Maine so picking out a rooster was never a problem. However, we are now city dwellers and of course, roosters aren't allowed.I ordered four sexed female chicks from mypetchicken.com, and I'm afraid that my Australorp might be a rooster. It's the biggest by a large margin, has bigger feet, the biggest comb, and for some reason it's got the least feather development. Everybody else has tail feathers and a full set of wing feathers, the Australorp still has fluff for coverts. I only have one Australorp, but I do have two buff Orpingtons, and one silver laced Wyandotte. As of today, all my birds are 3 weeks and 2 days old. I have attached images of my birds. Thank you in advance!