What exactly causes blue eggs

[mammat]

Does anyone know how exactly EE eggs are blue. I know it is genetic but is it a special chemical or what? I cant find any info on the web about why the eggs are blue and what causes it. We are having some issues with soft eggs only with the EE.
Thanks!

 

[Kaeta44]

Take a look at http://www.blpbooks.co.uk/articles/egg_shell_colour/egg_shell_colour.php which will tell you all about it.

 

[mammat]

Sweet! Thanks, that was exactly what i was looking for