Colour Recipe

[ErniesFlock]

I have two F2 chicks now about 6 weeks old. I recognize this pattern on their breast but what is it called? Is it autosomal barring or?
believe they are e+/eb and wondered if this pattern is a result of that? First two to hatch with such markings since I started this line. Please feel free to lay out what you think is the recipe

 

[Georgia Boy 1970]

What was the original cross?

 

[ErniesFlock]

It was long ago but started out Welsummer, Marans & ISA Brown. This isnt the phenotype I have been working on its a surprise lol

 

[ErniesFlock]

Here are a few non culls...




Full F2 sisters