- May 21, 2017
- 15,023
- 36,692
- 1,062
Delawares aren’t the best example of columbian, since they also have barring. Columbian rocks, light sussex, and light brahmas are all good examples of silver columbian.Columbian is the name of a gene that causes reverse color next to the rachis of a feather. Look up Delaware chickens and pay attention to the neck and hackle feathers. That is a good example of the effect of Columbian.
The combination of Columbian plus Melanotic plus Pattern genes is what makes single lacing as in Silver Laced Wyandottes. If you take away the Columbian gene, the combination of Pattern and Melanotic gives a double laced effect similar to the EE chicken posted. I have a couple of double laced chickens which just means that I have not yet stabilized Columbian in the breeding population.
My birds lay blue eggs. That is what I have been working to achieve since 2013. I want single laced Silver Laced Wyandottes that lay large blue eggs. This means I have a lot of work to do to reduce the influence of the porphyrin genes. In other words, I have to turn off the brown pigment that causes olive eggs. I have two genes in my birds to do this. The first is the intense white gene from the blue egg laying Brown Leghorn parent. The second is the disabled porphyrin biopath again from the Brown Leghorn parents. The genetics involved are complex but I am very close to having a stable breeding line that looks like Silver Laced Wyandotte and lays blue eggs. Along the way, I had to go through a phase with a lot of hens that look like Golden Laced Wyandottes but laying blue eggs.