Silver Blue Maran Birchens?

[svaughnos]

I bought a dozen Black Copper Maran eggs and only 6 hatched. One died about 2 weeks ago but the other 5 are still going strong. I emailed a couple photos back to the person I bought the eggs from and he told me that I have Silver Blue Maran Birchens. Is this correct? And is this something you want to keep if you are wanting to just breed for Black and Blue Copper Marans? Help!

Here are some photos:

Here is the Black Copper Maran Rooster that came out of these eggs too.

Mutt?