The first pics you took look like two roos and a pullet and not sure of the breed either. It's so hard to tell when they are gawky teens! lol They all look like sex links to me at that age
i have had the feeling one may be a roo! not that i really have a clue!! they are about six weeks old, when will i know if i have a roo or not? one roo is ok,i dont have any neighbors that will care, i just thought no ros would be easier,but of course im attached!! if i do have one roo,i will have 6 ladies for him, i dont want any over breed featherless chickens, so now i have to ask for rooster advice!!!! ugh,who knew chickens would be so complex!!!!!
They look like my black sex links. A black sex link is often a barred rock x RIR which may be why many have identified it as a br. I have three of them and they all have varying degrees of black/white on them. One has more brown tips on her feathers than the other two.