People are more comfortable making OEs if the eggs are blue that they hatch. Sometimes an AM will not have the blue gene. It is not very common that a Marans will not have brown genes.Is there a reason everyone uses Maran roo with ameraucana hens? I was gonna use Ameraucana roo with maran hens? Is there an advantage of the maran roo?
Either one does work as long as the chicks get a blue egg shell gene and dark brown coating genes.