Yes, but only if they have the recessive single comb gene. And, that's true, it can pop up in show lines. Especially for breeds with rose combs. However, it's pretty rare and undesirable for anyone wanting to breed for show.
Nice autosomal red.
Depending on where you got it, your chicken is probably a silkie cross, but could be a satin silkie.
There aren't any varieties of silkies with single combs. Except for hatchery quality ones.
You could call it that. I doubt he has anything spangled in his background. I believe his pattern resulted from lacing getting diluted over a couple generations of crossbreeding.
I'm not sure what you mean by extreme, but I'll try to avoid that.
Just because he's not columbian based doesn't mean columbian didn't affect his coloring. Are you saying that crossing mottled columbian with wild type will automatically give you wild type chicks with mottling? Genetics doesn't work like that. You'll get chicks that have genes from columbian and...
Not in the first generation. Mottling is recessive. Mottled carriers often have a few mottled feathers, but that's all. What you're seeing is silver leakage. Leakage happens when you cross different varieties. A color can look the same as something else, but not be that. For instance, I had a...