You did not say if you had any Minorca females or not.Are these hatchery stock?The reason I ask is the hatchery birds are often way to small.Minorcas are a very large bird with length,height and weight.They are a bit slow to mature,so at nine weeks they are kind of young to cull.I find they are about fully mature at 1 and 1/2 years old.They tend to be long legged without much breast muscling when young.The combs keep getting bigger,so as youngster I do not want a big comb or a blade on the comb that follows the neck,as it will follow even cl;oser as it ages and will turn.The tall leggy ones make better old birds just as long as they are not so narrow in back width that they are knock kneed.The females,especially when older, should lay very large white eggs. For breeding you might want to keep an extra male around in case something should happen to one,especially if they are large and good representatives of the Minorca breed.