I have 3 BCM and one has no color on her neck is this acceptable in regards to the standard and something which should be looked for ? Should she be eliminated as a possible breeding individual? She is 7 months old and none have produced eggs yet. She seems a little slow to mature and has not much of a comb or color to the comb. All are very tame. When should I expect my first eggs? Thank you for putting up with such a novice.