I am new to chickens...very new! From looking at pictures online, I would guess these are RIR?? We got them from TSC a couple weeks ago. How do I know if its a roo or a hen? One of them is a little more red and the other is a little more yellow. When we got them they were about 2 weeks old I am guessing?... The yellowish one. The redish one. Today...about two weeks later from first picture. Today again. Any help would be great! We can't have roosters in the city so I am hoping they are hens, or they will have to find a new home.