Ameraucanas: white recess roo over mauve hen?

[joduh]

Will all the chicks be blue? Could some be splash?

I have a pen with 2 white roos over 6 white hens plus one mauve. I have a 3 week old chick who started off yellow so we assumed white, but now I'm seeing the odd gray feather.

Thanks for your input

 

[pipdzipdnreadytogo]

Recessive white covers all other plumage color genes, so it's hard to say what might be hiding without a test cross. It's possible your recessive white rooster is Blue or Splash underneath his recessive white exterior, in which case crossing him to a Mauve would work the same as crossing a Blue or Splash rooster to a Mauve hen, with the addition of all offspring carrying recessive white from their father.

Blue x Mauve should get you about 25% Black, 50% Blue, 25% Splash, all males carrying chocolate from their Mauve mother.
Splash x Mauve should get you about equal numbers of Blue and Splash offspring, and again all males carry chocolate.