you are saying cockerel #1 is a worst for the white ?#3, He is the youngest of the group.
I did not notice any underfluff until I saw his chest in this photo.
I believe #1 is the worst for white.
I will go out and check this morning.
I will pen 1,3,6, figure out who #7 is, and get rid of the other 3 (#2,4,5).
chooks man