how do you stabilize birchen? i have a mixed hen that i want to work with but not sure what i should out over her. she has several different colors in her most are recessive as well. colors include: white silkie, mille d'uccle, and self blue d'uccle. i wasn't even trying to get this color but i love it and so do many others. she does have black skin, 4 toes, feathered legs, and single comb of which all i wish to keep. i sold her brother. i can put pics up if need be. first cross: mille covering white silkie = buff with black babies F1 (these babies is where i started) 2nd crossing: self blue covering F1 = birchen colored hen and roos with to much coloring F2 (where i am at now) 3rd crossing: ____________ covering F2 = ????????