I think I messed up a little - . I banded the male kids this year, and so far, nobody has acted bucky - except one. I compared the others that I banded and they have no "lump" there, but his fellow does? I don't feel testicles - they are gone but is it possible for them to grow back a little? Now I am wondering would he be fertile. He is doing the herding thing, and all that. We just separated the bucks - they are all standing at the fence, not going into their shelter, staring at the females. Since he is a kid, basically harder to keep him separated - as he goes through the bars in the gate, and trots back in.