I was talking about the down color and convinced myself that i could tell my splits ... I had a mixed hatch earlier this year and thought some of them had down that was lighter than the others and assumed that they were the splits... Next hatch were all splits and their down looked the same as the ones that I assumed were the splits the prior hatch... But looking back i think i saw what I wanted to see.If you are see purple in your bird you should not breed them. Green sheen is what you breed for. You can NOT tell a split by look. I have 75 or more that I have had over the past couple of months and if I could tell split from black I would be FLYING. they look the same. You can test breed them to find out but that is the only way.