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For F1s you are assuming that the barred roos have two copies of the gene. Since we're talking silkies, chances are that they do not, in which case about half the ffspring will inherit barring and about half won't. There is no gender linkage.
Cuckoo/barring does not require an underlying black bird, although that is most common. Barring does not show as well on lighter colours. Blue barred/cuckoo is really pretty.
For F1s you are assuming that the barred roos have two copies of the gene. Since we're talking silkies, chances are that they do not, in which case about half the ffspring will inherit barring and about half won't. There is no gender linkage.
Cuckoo/barring does not require an underlying black bird, although that is most common. Barring does not show as well on lighter colours. Blue barred/cuckoo is really pretty.