DWCAP the batch of chicks they came from was allegedly 95% hens. As for training unless Allan or Gandalf weigh in soon it looks like that is going to be Temeculaguy’s job.
Actually the probability question gets even wierder. I bought two breeds of chickens, 5 of 1 type and 3 of another,both types allegedly sexed to 95%. 5 of 5 of the one breed was a rooster. Ginger Maryanne and the other rooster are all the same breed.