I think manfighting is more strain specific, than breed specific. I think that the hatcheries put out more man agressive birds than any other. I can verify that it is a highly heritable trait. I decided to keep a male of this sort way back because he was "my best". The majority of his sons and himself did not have a long history. I am not going to feed a bird that I have to keep my eye on, or give it away.
It is my opinion that many man aggresive birds have something wrong with them. Something is loose upstairs.
It is my opinion that many man aggresive birds have something wrong with them. Something is loose upstairs.