I have a pair of Harold brown Grey gamefowl a friend gifted. I kept 2 pair of their offspring. They are paired up now but in the spring I'll trade one from each pair with someone to bring back vigor and get them a little bigger.
Infusing of different breed you will from time to time get one that looks like the infused breed called a throwback. Obviously you don't want to use that for breeding but they are usually cherished in the gamefowl world as good luck. Just this year breeding my kelso gamefowl I had 1 look just...
If you have the choice then line breed. That is mom-son, father-daughter. In breeding is sister brother. What will usually happen is the offspring will start getting smaller and a tell tale sign of tightly bred fowl is small size and tilting of the tail. An option is to infuse new different...