Color of Eggs

[Akane]

Actually it would be entirely possible to get a blue egg if you could get rid of the brown egg genes. If the rooster comes from lines that lay green eggs it means he might carry blue and brown genetics. There is no green genetic. It is only blue or brown and when you put them together you get green. If a hen lays green eggs she is carrying at least one blue gene and can pass that on to 50% of her offspring or 100% if she's carrying 2 blue genes. If the roo hatched from a green egg he has a 50% or better chance of carrying one or more blue genes depending what his parents had. So he may pass on a blue gene. The problem is there are multiple brown genes and they are dominant. The odds of getting anything but brown from crossing with a white egg layer are pretty much nonexistent unless we get into very very light shades of brown that look off white or the "pink" eggs which are certain light brown genes. You are pretty much guranteed to get some shade of brown if you cross a chicken with brown genes to one with white. That means even if the blue is passed on you will get a green egg. The shade is the only mystery.