So I have 2 new silkies. One for sure is a rooster (Oliver) the other one (Whitney) I'm still thinking there is a possibility it may be a hen, even tho she has some wattles (which aren't all that big when compared to Oliver) and a few streamers. Whitney has also only crowed twice and has exhibited behavior and sounds that really reminds me of my other silkie that passed away a while back that was a hen. So Oliver, it looks like has tried to mount Whitney a few times. My question is do chickens know if another chicken is a rooster or a hen? These guys are almost 5 months old.