I disagree, because I have a full blooded pair and mine are the same color(the babies).
The breaders are in a pen by them self,just saying.
I hatched their eggs myself.
Look at their eyes,if they have amber or colored eyes and not black eyes then they are mixed.
So do some research and you will...
I have hatched 13 and so far only have gotten 3 black marans.
4 are white and the rest are wheaton.
It's been a very colorful hatch and I expect more colorful ones,they are beautiful though.
I have a pair that are throwing all from the wheaton line.