They are 4 months old, I have gotten ahead of myself!
They are a trio, 2 boys and 1 girl.
I have some little poults still inside (5 weeks old, and 2 weeks old), and they are looking like 2 boys and 1 girl too
The end goal is to keep only 1 tom, (whichever of the eldest 2), and only hens - which will one day be 4 or 5 - I hope!!
Unless you're going for something specific with breeding, keep the one that's friendliest toward you and other people.