Hello all, my wife and I just got 6 chickens to have a small back yard flock. We have 2 reds, 1 Black Sexlink, a Gold and a Silver Sebright and a Black Frizzle (smooth). they are all between 4 and 8 weeks old. i built a coop and tractor for them. we are looking forward having fresh eggs in a few months. we are from Sioux Falls South Dakota, its a new ordinance that you can keep up to six chickens with in city limits, just no roosters. we are fairly sure that most of ours are hens. except our frizzle and silver sebright, who are the youngest at 4 weeks. we are holding off on getting rid of them until we are certain that they are roos. but was just wondering if the development of combs or waddles on either of them are a for sure sign of roos. our gold sebright doesnt have hardly any comb at all, but the silver has a small comb developing.