Quote:
I have a new possibility on the reddish brown birchen you hatched.
I was doing some reading and found this:
"The Db gene (when homozygous) significantly changes chick down pattern/colour, in all E locus alleles, except for eWh. This gene was named after its trait of modifying ER - black down to brown shades (in some genotypes, the brown may be restricted to the head region- i.e. black body unchanged). " The same source stated Mahogany is NOT visible in chickdown.
The Db is a eumelanin restrictor, meaning it restricts black, like the Co gene. I believe that the brown headed Wade Jean specials that Don gets from time to time also carry Db, and will probably feather out mossy.
But this gene also expresses in chickdown as described above, making our normal BC chickdown shades of brown. Maybe the dilution of black from the andalusian blue gene is making that chickdown look sort of reddish brown. Maybe it's the blue birchen version of Don's Wade Jean specials. We know some Marans carry Db because it is what makes Blacktailed Buffs out of Wheatens.
I have a new possibility on the reddish brown birchen you hatched.
I was doing some reading and found this:
"The Db gene (when homozygous) significantly changes chick down pattern/colour, in all E locus alleles, except for eWh. This gene was named after its trait of modifying ER - black down to brown shades (in some genotypes, the brown may be restricted to the head region- i.e. black body unchanged). " The same source stated Mahogany is NOT visible in chickdown.
The Db is a eumelanin restrictor, meaning it restricts black, like the Co gene. I believe that the brown headed Wade Jean specials that Don gets from time to time also carry Db, and will probably feather out mossy.
But this gene also expresses in chickdown as described above, making our normal BC chickdown shades of brown. Maybe the dilution of black from the andalusian blue gene is making that chickdown look sort of reddish brown. Maybe it's the blue birchen version of Don's Wade Jean specials. We know some Marans carry Db because it is what makes Blacktailed Buffs out of Wheatens.