I bought some clearance chicks and need help identifying the breed and gender. The first image is one of two black chicks, I think are BA, I'm new to raising chickens so I'm not sure. Not sure of their age, perhaps 6 weeks or so, I have had them 4 weeks and I think they both may be roosters. Second image is the other black one and a white one I think is a rooster also, not sure of that or the breed, maybe a Leghorn? Third image is another picture of the white one. I also bought two yellow sex-link pullets, but I think one is a roo. The fourth image is of the YSL chicks which are 4 weeks old. The one on the right looks more like images I've seen of RSL pullets and the lighter one on the left looks like RSL roo.... The last image is of the light YSL only.