The comb is a pea comb that is heterozygous, ie only one gene for pea, the other for straight comb. Thus he is most likely a cross as pure breds would have homozygous combs. He looks to be black breasted red which is a common rooster type in many breeds. Here is some info on the genetics of chicken combs
http://articles.extension.org/pages...or-small-and-backyard-flocks:-an-introduction A homo pea comb is tight and has three lines of bumps, but when they get crossed with a straight comb bird the comb gets larger and floppy. Since I am sure he is a cross it is hard to say of what. Looks like a lot of our crosses, many who have 7 or 8 breeds in there lines. Looks like he might have some game in his genetics.