It would if that is all they had, cochins have single combs, there are lots of pictures on Feathersite (link below), silkie X would explain the combs on your guys since silkies have walnut combs. You might try starting a thread just for your guys to get more answers.
http://feathersite.com/Poultry/CGA/Cochins/BRKCochinBty.html
http://feathersite.com/Poultry/CGA/Cochins/BRKCochinBty.html
