What am I?

[Littlemiss42]

Usually I'm pretty good at being able to tell if I have a hen or a rooster but these babies have given me trouble. I think the light colored one in the back for sure is a rooster. I'm not sure about the darker colored one or the one with the red coloring. I hatched eggs from a seller on ebay that does a lot of mixed colors so I'm not sure of their coloring either. I'm not going to keep any roosters so I need to be able to tell so I can rehome them soon. Would appreciate any help you could give me. I can get better pictures if needed. They are 11 weeks old
Thank you

 

[JedJackson]

I think you are right about the white one. Its comb has some height, and is very red.

On the other two, the only thing to judge by right now is comb size, which isn't apparent in these photos.

They are both going to be difficult to tell. Around 12 weeks, male specific feathering starts to come in, but that is not easy to see on Silkies and Frizzles.

My hunch is that they are all cockerels, but that is only a guess at this point.