I purchased 40 birds total from Glenn, 10 in 2014 and 30 in 2015. In addition I hatched 35 chicks in 2015 from my 2014 birds. From those 75 birds I have a pen of black marked girls (1 hen and 4 pullets) and a pen of all white girls (1 hen and 4 pullets). Out of that, one of the black marked pullets is close to ideal. See pic.
See is big, good type, well marked with yellow legs. My second best girl is similar with white legs. The girls are productive - the black marked pen has averaged 4.35 eggs a day for the last 30 days. The all white pen has averaged 3.5 eggs a day for the past 30 days.
My challenge is I have no "well marked" cockerels. My closest guy is big and good type, but blue marked with yellow legs. My second is big and good type, as well. However, he is all white with yellow legs.
In test hatching my pen of white girls have yielded no significant color, using the "blue" male. Further the blue male has fertility issues (less than 50% hatch rate). So far my best option is the All White cockerel over the black marked pen, yielding color on 44%, (7 of 16).
May plan is to hatch at least 4 hatches out of the black marked pen - hoping for around 120 chicks. If the 44% holds, I should have around 50 marked birds to select from next fall. Hoping for some decent cockerels!!!!