Welcome to the Ameraucana Forum!Quote from: John W Blehm on April 15, 2025, 06:18:59 PM
Even after several years of breeding for a dark brown/chocolate bantam dun variety, I'm still not 100% sure of the day-old chick phenotype needed to mature into the color I desire...
Quote from: https://www.kippenjungle.nl/chickencalculator.html•E Extended black, hackle, shoulder and saddle of the males may leak groundcolor (eg red) depending on unknown absent genes.I bred him over several black hens this year and all the chicks hatched black, some with brown/red foreheads. Because of this and the results from my first year of a LF dun breeding project, I think the reason I've had so much variation in chick phenotype with this bantam dun project is due to so many different genes in the breeding population. At this point, I feel black to dun will produce chicks with grayish-blue down which carry one copy of the dun gene and also black chicks without a dun gene. Both may have that brownish/red forehead and I believe whatever gene that represents is the reasonable for the brown dun or chocolate dun variety. Without it, dun produces the grayish/blue variety...almost a self blue (not lavender). It may also be the difference between an off-white khaki and more of a fawn color, but I haven't bred for that.
Quote from: https://ameraucanaalliance.org/forum/index.php?topic=1678.msg10064#msg10064* Dr Okimoto has mentioned in the past that red enhancers may modify Dun expression.From my LF dun project, I've only kept the grayish chicks. Below are a few photos of week-old chicks. Note, the one without any brown in its forehead is feathering out a dark or slate blue color. The one with a hint of brown in it's forehead has a hint of some brown color in it's wings. Maybe it only carries one copy of the unknown red enhancing gene(?). I assume the chick with the most brown in it's forehead is pure (two copies) for this unknown red enhancing gene and is feathering out quite brown/chocolate.
