I have two pens of these beautiful birds. The bantam cochins are simply one of my favorite breeds of chicken. They have so much personality. I couldn't resist when I had the chance to trade to get these birds as chicks last year.
In my CO2 pen I do have a mottled cochin and a black pullet so you may get some different looking chicks from those eggs. I just wanted to keep her and I only have these colors so she's in there. I will be hatching my first batch of eggs here in a couple weeks so I will make sure the chicks are distinctly different, but I don't suspect identifying them will be a problem.