I have a question. I have a blue wheaten Aneraucana pair (full blooded from originally great bloodlines) I got the pair and the hen wasn't laying yet but now she's laying and they are TAN not blue. I've hatched about 7 chicks from them and will see if the pullets will lay blue but right now any I sell I'm going to have to advertise that they did hatch out tan eggs so we don't know if they will lay blue. Has anyone ever had this happen? Do you think they will most likely lay blue? Again this a FULL blooded pair. Not Easter Eggers. I've purchased from this fellow multiple times over the years and always had great beautiful birds who lay blue.
I had one. My first breeding pair I bought, also from well known lines. Didn't keep them long though. After talking with the breeder, he was surprised to hear the news because he thought he had got rid of his problem when he got rid of the girls laying the tan eggs. However, I guess he forgot it takes two to tango and he did not pull any of his roosters. That's how his problem showed up again with me.
So, your offspring will likely at best, lay olive eggs. That's if your rooster gives them a blue gene. If any of the offspring also lay a tan egg then you can be sure your rooster is not carrying two blue egg genes, just one. You need to replace your girl because she will just keep giving all her offspring brown egg genes. You may need to replace the rooster also if any tan eggs show up in the offspring. That would mean he also carries at least one brown egg gene and that is how you end up with hens laying tan eggs instead of blue somewhere down the road. Unfortunately, it takes about two years to find out what a rooster is carrying (raising him and his offspring to lay), if you ever do. I imagine you have to raise quite a few of his offspring to find out if the wrong gene exists. That is how these things pop up.