I think Roxie got pegged as a BSL because of the barring. My BR cockerel is 8 weeks and has very tight, crisp barring. He has the same ratio of white to black as your chick, but his bars have always been very well defined. Pullets, on the other hand, look almost spotty until they go through their teenage molt because they only have one copy of the barring gene and that results in less *crisp* bars. Black sex link cockerels only have one copy of the barring gene because only the mother is barred, so they only get one copy of the gene. Your Roxie has the same kind of spotty/misaligned bars as pullets (single barring gene), but the white:black ratio of a cockerel.
Someone correct me if I'm totally wrong - I've been trying for the past month to figure out if I actually picked 5/6 pullets from the TSC straight run bin, or if I got stuck with a bunch of BSL cockerels. I'm pretty much convinced at this point that I actually may have picked them well... but we'll see. The one obviously boy is very, very handsome and filling out much differently than the other chicks.
Someone correct me if I'm totally wrong - I've been trying for the past month to figure out if I actually picked 5/6 pullets from the TSC straight run bin, or if I got stuck with a bunch of BSL cockerels. I'm pretty much convinced at this point that I actually may have picked them well... but we'll see. The one obviously boy is very, very handsome and filling out much differently than the other chicks.