Signing chickens can't really tell yet. Probably wont be but another month or two though. I see you are close to me. Where are you getting your silkies from?
Wicked chickee the one on right looks roo but I can't see the one on the lefts comb. It doesn't look like it protrudes at all. Perhaps better pics would help.
I can't see the combs that good but it looks like the one on the right may have a bigger one indicating roo. On the other hand I don't see any streamers. How old are they?
Are these the "streamers" for which I have been watching?
I had one with feathers just like that and it just ended up rounding out and she is a pullet. So just keep watching.