I agree with Teresaann24.
Two pullets and a roo. In the first photo the 2 eating look to be pullets and the one on the right is a roo. The other photos sort of help but they aren't very clear.
I also can tell with the head dress. The males have long spikes that come out of the back of their pom poms and go down the back of their neck but pullets don't have this. As stated before, the girls have rounder head dressing. Also, the comb is a give away in some at a certain age.
I am always amazed when a Silkie is 6-7 months old and the breeder can't tell. So far, I haven't had any problems with mine or others that I see in person. I knew what my chicks were by 4 months old but I watched them interact every day and that also helped.
It won't be long and you will see the obvious with Silkies.