Is my rooster a blue gene carrier?

[bebesdeivanka]

Hello, my rooster was born from a blue egg (his mother is an unknown mix (id say between sussex and X) and his sisters crossed with a normal backyard mixed rooster give green eggs), his dad is a just a normal rooster, a big meat bird that my friend raised as her pet.
Would in this case my rooster pass on the blue gene or are the chances low?
I know that girls do have egg colours that vary but i am not sure if that goes for the brother too

 

[JacinLarkwell]

He may have a blue gene from mom, or he may not if she only had 1 blue gene

 

[RoostersAreAwesome]

He has a 50/50 chance of having the blue egg shell gene.