Silkies? Cochins?

[RockerHen]

Both silkies are 100% roosters. Second one looks younger than the first and is probably not dominant, which is why he isn't crowing yet, but they are both male. Those thin shiny feathers coming out of the crest (streamers) are an exclusively male trait, not to mention the large red comb. The other birds do appear to be some sort of game bantam, better pictures would help.

 

[Wyandottes7]

Both Silkies are roosters. Their combs are just too large and red to be pullets, and I see pointy, longer feathers (called streamers) on the head. Your three little hens are likely Old English Game/OEG crosses.

 

[BooeyBird]

Flo is a definate rooster. Both silkies are for sure roosters I see streamers and look at the huge red comb! Only male silkies have streamers witch are the longer feathers coming out of the back of the crest. Also only the males combs get that big and red.. I am not sure about the other three try and get a close up?