Thanks for the input. The black silkie looks like there may be streamers coming out of the back of the head and the crest seems more like a mohawk than rounded. But maybe only time will tell.
We have some 3 month old silkies. With all the research I have done, it looks like I unfortunately have roosters but I don't want to give them away if they are really hens. silkie #1 (with brown brick)
Silkie #2 (with grass background)
Silkie #3 (black silkie)