Good point... I always selectively breed at least one hatch prior to flock breeding just so I know exactly what I have. Flock breeding is easier so I don't selective breed beyond about 5-6 weeks (long enough to get the first hatch on the ground). Then I combine those who I keep and don't breed the others. That's why my breeding pens are expandable. .. I use all the dividers for selective breeding and then take them out for flock breeding and/or grow out.
I guess I am way too anal to breed something without knowing what it passes on (the good and the bad). But i should remember that most folks are not as anal as I am. LOL. I could easily drive many people crazy with me analness - is amazing my husband puts up with me. ROFL. Must be the engineer in both of us.
I so understand that analness. I am that way with my RC HRIR. I have my RC rooster in with 1 RC HRIR hen and 1 wannabe Red because I can tell the difference in their eggs so I know which ones to grab to eat and which ones to hatch, lol.
Penny