I agree with everybody else, the production red is a pullet. I'm not sure about the blue cochin, but it's most likely a cockerel. There's a chance it could be a pullet... I'm not 100% sure.
Personally I wouldn’t jump to saying the Cochin is male. Which is why I think you should update in another 3 or 4 weeks. It has a blushed comb but some of my female chicks have looked the same at that age.