Eggscoozme
How do you know if you have good Bielefleders? I bought 7 Biels (6 pullets and 1 cockerel) in mid May. I have one laying , 3 others look close and 2 still have a ways to go. I do not supplement with light, so I don't know if it's timing our if they are later bloomers as you described. They all are large and plump (not as plump as my Orp but they probably weigh more). They are very affectionate birds , calm and confident. They have red earlobes. Some have darker faces than others. Their conbs are fairly small. Some otheir hackle feathers are a lighter yellowish versus a darker mahogany. The one that is laying (every other day) is laying a large egg medium orange / brown egg that started fairly average medium. She has been laying for about 3 weeks (right at 6 months). The Cockerel is much better than my Orp cockerel. Very alert to predators , tells the girls where good eats are and is not aggressive towards us.
My Biels all roost together , separate from my Orps.
Thank you