Crazy for Chickens!
Free Ranging
Are you sure these are Silkies? They don't really look like silkies, and one of them has a regular comb, not a raspberry comb.
These birds are mixed, but it isn't the combs that give it away. It's the smooth feathers.True silkes have walnut combs and they are both probably mixed breed silkies but the one with the single comb is the most likely mixed one.
With Hatchery stock, lots of silkies have single combs.
Also, silkies have Walnut combs, not rasberry.