Genetics of brown red

[Justso]

Can somebody run by the genetics of brown red (as with brown red cochin) or link to a post that has info on it?
Thanks.

 

[The Moonshiner]

ER/ER s+/s+
Birchen with sex linked gold

 

[nicalandia]

ER/ER s+/s+
Birchen with sex linked gold

True, and when you add the Blue Dilution you get Lemon Blue

 

[Justso]

You can get a lemon blue from a birchen hen???

 

[Justso]

Thank you both, by the way, it did help me find this link
https://www.backyardchickens.com/threads/genetics-question-about-brown-reds.98375/