- Sep 1, 2010
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Yes, Tim, I believe that is correct. Two sibling cockerels from the same cross had a blue golden duckwing phenotype. Females appeared to be blue SDWs with some orange/red coming through - probably due to being heterozygous for Db.The male in the picture would have to be heterozygous silver/gold. My experience with dark brown and columbian in combination with homozygous silver would produce an almost white bird with some black in the tail. I do not think the bird in question carries dark brown and columbian. Work by Moore et al. indicated one copy of Db on wild type will produce the breast color in the silver male. Moore and his associates believed there was a modifier present that causes the brown breast. It appears to me the male in your picture has a leaky silver color on his breast- it is nothing like the breast color I have seen in my gold/dark brown males that I have produced. I believe he is carrying one Db gene and the unidentified modifier. That modifier could be mahogany or a something similar to mahogany. Kimball when working with wheaten documented a gene he called dark that did the same thing as seen in the picture to the breast of wild type males.
Tim