I am new to this chicken thing, however here it is. We have one mutt hen (given by a friend) who is about 1 and a half years old. She has been laying nice large blue eggs almost every day for about a week now (when we first were given her she was moulting). We have only 4 other hens, all just full grown and laying for a week or two. Two BR, 1 SLW, and 1 bantam cochin. All four of these girls are definately laying very small brown eggs. Today though, Goldie (the mutt) was in the coop alone singing her laying song for all to hear. My son ran in to check and she left us a brown egg. We are 100% sure this egg is from her as we had just gotten the other eggs a few minutes before she went inside to lay. Is it normal for her eggs to be brown now or don't they stay blue if she lays blue?