BCM roo over Delaware hen

[Crosstown Cuckoo]

I know this is a year old...
But was wondering if you could make an auto sexting cross from these crosses?

 

[NatJ]

I know this is a year old...
But was wondering if you could make an auto sexting cross from these crosses?

You mean from Black Copper Marans and Delawares?

Starting with those parent breeds, you probably could develop an autosexing breed in time. But it would take several generations to get it breeding true and properly sexable.

Autosexing means a breed that breeds true and is sexable by some trait. Cream Legbars and Bielefelders are autosexing, and any of the barred/cuckoo breeds are at least somewhat autosexing (Barred Rock, Dominique, Cuckoo Marans, etc.)

Sexlinks are a cross that produces color-sexable chicks, but you have to do the same cross again each time. For sexlinks, just cross the the Black Copper Marans rooster with the Delaware hens. Every time you do the same cross, you get color-sexable chicks. You just cannot breed those chicks in any way that will produce color-sexable chicks in the next generation (although they could be used in a project that eventually produces autosexing birds a few generations later.)