Thanks, good luck to you, too. I don't know a lot about egg color genetics. I think that a BCM/BM cross would result in an egg color at least as dark or darker than the BM, and possibly as dark as the BCM color, but probably not. Birchen eggs:
Thank you! I just received some hatching eggs today. One is a Birchen Marans, and one is a BCM! I sure hope they hatch successfully!
Edited for spelling.