These six chicks are some combination of EE cock or Black Orpington cock and possible hens are EE, Orps, RIR/Comet, or mystery breed. It's hard to see each of them in this picture, but they are 5.5 weeks old. Any guesses on genders or breeds?
From closest to farthest, 1 and 3 are the ones I think are roos. Combs and waddles are bigger and redder than the other chicks. I have trouble telling them apart, but because I think they are roos I've been calling them Riggie and Florentine. The other black one that I question is the 5th picture in the previous post. It also has a pinker comb than the others. We went from calling her Mary to calling it Wings.