Blue laced red polish
Genes for secondary color pattern only
birchen E^R/E^R, Columbian Co/Co, Mahogany Mh/Mh, dark brown/melanotic/pattern are linked Db-Ml-Pg/Db-Ml-Pg, heterozygous blue Bl/bl+, sex linked gold s+/s+
If you want mahogany in your polish you will have to out cross.
1. Cross a splash or blue male with gold laced females to get started or cross a gold laced male to females that are blue or splash.
2. Then back cross the best blue female offspring to a gold laced male or cross the best blue male offspring to female gold laced.
3. Pick a blue male bird from cross #2 with the best breast lacing and cross him with gold laced females- hatch a bunch of eggs and you should get some blue laced red birds.
The birds will not be red because of the Db genes effect and the blue will tend to dilute the red. You will need the mahogany to make the red darker. The best you can do will be to produce a buff bird laced with blue.
Tim