Cold

I know exactly what your talking on now tex , no different than a heavily inbred line of game fowl . you get to a point in time and start getting runners but you take them hens off that running line and put under another family of roosters and you are back in the derby money . been their and done that with a family of whitehackle chickens . I was gonna kill every one of them and start over till I got schooled by an old friend of mine . he gave me a cock off of his line of whitehackles to put over them hens and told me to keep the offspring and start a new line or gene pool to pull off of and to carry on lol . but you talk about inbred I got a trio in 1979 and was still breeding them up until 1999 i'm surprised they didn't start coming out with two heads and four drumsticks lol . but they had gotten to about half the size of regular whitehackles .