And the roos should have sickle feathers, they are tail feathers longer than the rest of the tail feathers, and the best way to tell is to catch them on the roost
Look for saddle and hackle feathers on roos, they are thin feathers hackles are on the bottom of the neck and saddle are right before the tails, and at that age the combs on the roos should be a really good size
The front one is a roo...