I don't know if this chick is a Langshan or Sumatra. They were all supposed to be Langshans but he wasn't paying much attention when I got them. Out of seven chicks, two are for sure Sumatras and four are for sure Langshans. There is only one I am not sure about. It has yellow legs like a Sumatra, black shanks like both breeds, and feathered legs like a Langshan. I don't know what the comb is yet.