What mix and gender is my chick?

[LuciferRoo]

If a barred rooster always passes on the barring, how did I get my black hen?
There were 3 hens and 1 rooster in my flock and yet I got a black hen out of the mating.

Apparently, a barred rooster with a single barred gene can produce a none barred offspring. That would solve my question above.
It may also be a clue as to how your girl got labeled as barred rock. Their rooster, like mine, is not a pure barred rock.

 

[NatJ]

If a barred rooster always passes on the barring, how did I get my black hen?
There were 3 hens and 1 rooster in my flock and yet I got a black hen out of the mating.

The barred rooster can give barring to his sons and to his daughters.
Whether he gives it to all of them, or just to some of them, depends on how many barring genes he has. A pure Barred Rock has two genes for barring, and gives one to every chick he sires. A rooster that has one barred parent and one non-barred parent will have one barring gene and one gene for not-barring. He gives barring to some of his chicks, and no barring to the others. Roosters are sometimes called "double barred" and "single barred" as a way to state whether they have two barring genes or just one.

I see where you got confused:

Barring is sex linked.
Barred mom x non-barred dad = daughters not barred, sons single barred.
Barred Hens can only pass barring onto sons, not her daughters.
Barred Roosters can pass barring onto anybody.

That is making the point about what sexes can receive barring from which parent, but is not clear about which times the chicks must receive barring (sons of a barred hen, all chicks of a double-barred rooster) and which chicks have a chance to be barred or not (chicks of a single-barred rooster.)

 

[LuciferRoo]

Thank you NatJ and apologies to Homo sapien if I hijacked your thread.
However, I do think that it is pertinent to your original question and perhaps NatJ can enlighten both of us with an answer to it.
(I am very curious).

 

[Not-so Slick Chicken]

If a barred rooster always passes on the barring, how did I get my black hen?
There were 3 hens and 1 rooster in my flock and yet I got a black hen out of the mating.

For the purpose of my earlier response to the original person, I felt like it would be too much to give all the info at once if it wasn't needed. It can make things more confusing than it needs to be.

But here's more info.

Female chickens (pullet/hen) can carry up to 1 copy of barring.
She can only receive barring from her dad, and can only pass on her barring gene to sons.

Male chickens (cockerel/rooster) can carry up to 2 copies of the barring gene.
In order to be double barred, he needs to inherit one copy from each parent.
If he's double barred, all of his offspring will inherit 1 copy from him (daughters and sons).

If he is single barred, he could have inherited that from either parent.
A single barred rooster can randomly pass on his barring to any of his offspring. Some might inherit, some might not. It doesn't matter if it's daughters and sons.

If there's a barred hen, and a single barred rooster, you could end up with any possibility. Single barred sons, double barred sons, barred daughters, and no-bar daughters.

If there's been another rooster/cockerel in with the flock within a few weeks of that egg being collected to incubate, that could be a potential father.

So for your specific question- either your rooster is single barred, or he is not the father.

 

[AinaWGSD]

If a barred rooster always passes on the barring, how did I get my black hen?
There were 3 hens and 1 rooster in my flock and yet I got a black hen out of the mating.

Most barred roosters (of a given breed) are "double barred" meaning they have two copies of the barring gene. But you only need one copy of the barring gene for barring to show. A single barred rooster will only have a 50% chance of passing barring on to his offspring. Your rooster must have only one copy of the barring gene if he produced a non-barred (black) chick.

 

[Not-so Slick Chicken]

That is making the point about what sexes can receive barring from which parent, but is not clear about which times the chicks must receive barring (sons of a barred hen, all chicks of a double-barred rooster) and which chicks have a chance to be barred or not (chicks of a single-barred rooster.)

The original said they were sold the bird and were told it was a barred rock

I think it was really late and mistook another reply as the original writer clarifying more info about the bird, and so rewrote my original comment.

 

[LuciferRoo]

For the purpose of my earlier response to the original person, I felt like it would be too much to give all the info at once if it wasn't needed. It can make things more confusing than it needs to be.

But here's more info.

Female chickens (pullet/hen) can carry up to 1 copy of barring.
She can only receive barring from her dad, and can only pass on her barring gene to sons.

Male chickens (cockerel/rooster) can carry up to 2 copies of the barring gene.
In order to be double barred, he needs to inherit one copy from each parent.
If he's double barred, all of his offspring will inherit 1 copy from him (daughters and sons).

If he is single barred, he could have inherited that from either parent.
A single barred rooster can randomly pass on his barring to any of his offspring. Some might inherit, some might not. It doesn't matter if it's daughters and sons.

If there's a barred hen, and a single barred rooster, you could end up with any possibility. Single barred sons, double barred sons, barred daughters, and no-bar daughters.

If there's been another rooster/cockerel in with the flock within a few weeks of that egg being collected to incubate, that could be a potential father.

So for your specific question- either your rooster is single barred, or he is not the father.

That is a really great explanation and also very clear.
Thank you.