I purchased 4 cuckoo marans from my local TSC. Or at least that’s what they were listed as. Two look like cuckoo marans and are developing the barring. The other two are almost solid black with darker combs and have white wing tips only. Do I actually have 4 cuckoos or are two of them possibly black copper marans? All four have feathered feet. The flash on my camera makes the solid one look more blue or grey but she is actually black.