Barnyard mix sexing, 8 weeks age. Too soon, or should I take lots of photos???

[TheOddOneOut]

at 5 weeks???
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Good luck!

Hmm. Same cross?
No other barred birds or possible fathers?
I thought there’d be sexlinks, but with that lil barred cockerel there must be other roos or barred hens.

 

[U_Stormcrow]

You have no barred hens, right?
None at all?
Then yes, they’re sexlinks. Daddy is single barred, no barred moms....easy. All girls are barred, all boys are not.

i'm VERY new to the whole poultry genetics thing, and learning much more slowly than I did in my youth.

I have both Dark Brahma and Silver Lace Wyandotte, though I don't think there were any Silver Laced eggs in the first hatch. Are they not barred?

and that's the only male on the property, apart from what's currently hatching.

 

[TheOddOneOut]

i'm VERY new to the whole poultry genetics thing, and learning much more slowly than I did in my youth.

I have both Dark Brahma and Silver Lace Wyandotte, though I don't think there were any Silver Laced eggs in the first hatch. Are they not barred?

and that's the only male on the property, apart from what's currently hatching.

Silver Laced Wyandottes are laced - not barred. Different genetics.
Basically,
Barred roo x almost any color hen, including black, blue, laced/pencilled and red, equals barred girls and any color boys, depending on the cross. But only the girls would be barred.
That is what’s true for the older four.

 

[U_Stormcrow]

That helps TREMENDOUSLY. Lacing and Barring were confusing me.

So a barred roo over a laced hen is ??? what?

 

[LaFleche]

That helps TREMENDOUSLY. Lacing and Barring were confusing me.

So a barred roo over a laced hen is ??? what?

Both genders barred.

 

[TheOddOneOut]

That helps TREMENDOUSLY. Lacing and Barring were confusing me.

So a barred roo over a laced hen is ??? what?

Ooh. Hold up. The chicken calculator just took my whole genetics knowledge and threw it out the window. @LaFleche, heeeelp.

 

[TheOddOneOut]

Both genders barred.

And/or black.

 

[TheOddOneOut]

And/or black.

But why?
Isn’t barring sexlinked? Like, it should be that a barred roo over no barred hen = only barred pullets.

 

[NatJ]

Barred roo x almost any color hen, including black, blue, laced/pencilled and red, equals barred girls and any color boys, depending on the cross. But only the girls would be barred.
That is what’s true for the older four.

Wrong.
Sexlinks require barred MOTHER and not-barred father.

The hen has ZW sex chromosomes. Barring is on the Z chromosome, so she gives that only to her sons. She gives the W chromosome to her daughters, and that is what makes them female.

The rooster has ZZ sex chromosomes. He gives a Z chromosome to each chick, but it has no effect on what gender that chick will be. If he passes on a Z chromosome with barring, he can give that to a son or a daughter, because the gender is determined by the mother.

(If you had barred hens and a barred/not-barred rooster, then all sons would be barred and some daughters would be barred, but the few not-barred birds would all be female.)

The fact that the first four chicks include barred females and not-barred males is just a coincidence.

 

[TheOddOneOut]

Wrong.
Sexlinks require barred MOTHER and not-barred father.

The hen has ZW sex chromosomes. Barring is on the Z chromosome, so she gives that only to her sons. She gives the W chromosome to her daughters, and that is what makes them female.

The rooster has ZZ sex chromosomes. He gives a Z chromosome to each chick, but it has no effect on what gender that chick will be. If he passes on a Z chromosome with barring, he can give that to a son or a daughter, because the gender is determined by the mother.

(If you had barred hens and a barred/not-barred rooster, then all sons would be barred and some daughters would be barred, but the few not-barred birds would all be female.)

The fact that the first four chicks include barred females and not-barred males is just a coincidence.

Oof. I was wrong. Apologies for the confusion. I only meant to help.