Making a splash

[CEW]

I'll break it down as simply as possible. Splash birds have two copies of the Blue dilute gene. Blues have a single copy. Blacks have no dilute gene at all.
So Splash to Splash produces only Splash offspring. Blue to Splash will produce 50% Splash and 50% Blue. Blue to Blue will give you 50% Blue, 25% Splash, and 25% Black. Blue to Black will give you 50% Blue and 50% black. Splash to Black is the only pairing that will give you 100% Blue.

I’m glad you clarified that I’ve been sitting here looking online trying to figure out how to create a splash old English game and could not figure it out. I was guessing that it would’ve been a blue with a white but obviously I was wrong, so thank you for explaining that blue on blue can produce splash.

 

[RememberTheWay]

The extended black pattern of the BBS is dominant, so both the Cuckoo Marans and the Legbar hens should produce similar offspring. The barred/cuckoo hens can only pass that barring to male offspring, but the Blue gene has a bit of an inhibiting effect on the expresion of the barring/cuckoo, meaning it can be difficult to spot the white head spot on the males and the barring they develop may be faint.

This is purely anecdotal - but I've been breeding blue (black) sexlinks for over a year now. I use black barred rock hens with a splash Ameraucana and another pen has a splash Andalusian rooster over the same breed of hens. I've had zero issues sexing any of the chicks. Maybe it's just me?