Over a year of planning for today!!!!!

[Ridgerunner]

Does the egg coloration effect physical appearances of the birds ?

I'm not exactly sure if you have anything specifically in mind but no. There is no genetic link between any color or physical appearance of the bird to egg shell color.

I can think of two different things some people believe. One is the pea comb. Most blue or green egg layers have pea combs, but several breeds that have pea combs do not lay blue or green eggs. Brahma and Buckeye for example lay brown eggs. So a pea comb does not mean blue or greed eggs.

The other is ear lobe color. While may people believe that a red ear lobe means a brown egg or a white ear lobe means a white egg, it is simply not correct. I've had plenty of mixed breeds with white ear lobes that laid brown eggs. Some breeds that do not follow that "rule" are Phoenix, Penedesenca, and Holland to name a few. Most pure breeds do follow that rule but that is because the people that designed the breed chose to do it that way, not because the egg shell color has an effect on ear lobe color.

Have you heard anything else?

 

[Tonyg503504]

So the breed effects the coloration of eggs and feathers but differences in egg colors dont automatically mean differences in feather coloration

 

[Ridgerunner]

For a chicken to be a certain breed it needs to have a certain eye color, a specific comb type and configuration, a certain skin color, a certain body conformation, and many other things that makes it a breed, including a certain egg shell color. Within a specific breed you might have several different feather color/patterns but they all should have the same eye color and lay the same color of egg.

A Buff Rock and a White Rock should all lay the same egg shell color and share all these other breed traits. A White Rock and a White Ameraucana will have white feathers (and many differences otherwise that make them different breeds) but will lay different egg shell colors. There is no link between feather color and egg shell color.