Originally Posted by lilcougar4
dheltzel....... What will the difference be between male and female chicks from the crossing of either the BCM or Welsummer rooster over Cuckoo hens??? Are their pictures on the original post that show the difference??? Thank you for any of your help
You are making black sexlinks with a Cuckoo Marans hen. The 2 "requirements" for that are extended black down color and sex-linked barring in the female parent. Because the Cuckoo Marans has both of those, you can make BSL's with them and almost any roo. Some roos will not work well, namely "dominant white" (commercial leghorns for ex) and blue/splash (dominant dilution of black makes the head spot much harder to distinguish). So I would avoid a blue or splash Marans, but a Black roo should work fine. Welsummer also works because the extended black of the CM is dominant over the wild-type chick down of the Welsummer.
You will get very similar colored chicks from either sire, male chicks should have a white spot on their head. I like to wait a few days before culling the males and look for the barring on the wing feathers as they come in also. The BSL cross I made this year had some females with white spots on their heads, but they had all black feathers on their wings that were easily discernable at about 5 days of age.