Correct me if I'm wrong, but I thought only females can be Calico?
"Because genetic determination of some coat colors in cats is linked to the X chromosome, calicoes are nearly always female.[2][4] Because of the genetics involved, calico males are rare, and generally have impaired vitality and are almost always sterile."
You are thinking of tortoise shell. Tortoise shells are always XXY.
There seems to be an abundance of male calicos in non-kitten form...