The first one definately looks a bit like roo, that's quite a bright red comb going on there.
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i'm not sure about sex, but i think you should breed the black birchen looking one back to a mille fleur!
It looks like (s)he is birchen. Crossed back to a mille fleur, the offspring would be 75% D'uccles with the mottling gene and probably some wild colors!