What's Columbian?

[Henk69]

Quote:
Not splash as in 2 doses of blue.
If he is not pure for columbian the black can still leak through.

Buff can be based on columbian Co or on the columbian-like Darkbrown gene Db or both. Db alone would leave a lot of black on the backs of the females (at least if they are not wheaten based).
That's why I think "Db without Co" would give bad buffs.
Db is mostly in patterns like campine autosomal barring and hamburgh spangling and lacing in sebright (laced tail).
In these patterns it is linked to pattern gene Pg (concentric pencilling).

 

[Rootball]

So I think you are now clear that it is a gene which inhibits black and is a color type (light Brahma, light Sussex,( buff Brahmas are technically buff Colombian))


and just so that you know more than you ever wanted to know.......

It has nothing to do with Colombia or even South America. It is called Colombian because the color type was first shown at the Chicago worlds fair in 1893. That worlds fair was called the Colombian world exposition.......and the reason the worlds fair was called the Colombian world exposition was because it was the 400th anniversary of Columbus' voyage to the new world.

 

[tellynpeep]

OK. Now that interesting bit of trivia is taking up valuable space in my brain!!! Thanks......... : )

 

[Msbear]

Sorry to leave ya hanging. This is what I meant. (mind their dirt bath)

You can see your roo has similar markings as my columbian cochin roo. It refers to the black tipped and then white-outlined feathers in the neck, hackle, and feet feathering and the black tail feathers. Im sure some others have explained this gene better but Im just trying to explain it easier

I think your guy is some sort of cross. You were mentioning you wanted to breed him to mottled hens for a mottled project and I was just letting you know this would not work.

Though you would probably get some interesting varieties, you couldn't get a variety recognized by the ABA with him.

 

[Sonoran Silkies]

Looks like they are having fun!


I think the gene and the variety seem rather incongruous. Probably my lack of knowledge...sigh...I'm trying...some say I'm very trying

 

[Msbear]

I had to look up incongruous

...and Im still not sure what you mean. I was ready to come up swinging but I thought I'd look it up first

 

[Sonoran Silkies]

Incongruous--in conflict, at odds, doesn't match.

The columbian variety is a bird with a solid coloured body (white unless otherwise specified) with black in the hackles, tail and primaries.

But the columbian gene appears to have nothing to do with the black hackles and tail--just with removing black and its dilutions from the breast.

MsBear--I wasn't addressing your comments, but simply adding mine to the topic in general.

 

[Sonoran Silkies]

So I guess my follow-on question needs to be--what causes the laced hackles, flights & tail? I know Db causes the black tail--does it also affect hackles & wings? If so, does that make the original photo posted a BlBl DbDb?

Naming conventions (for the variety) would say it is splash columbian--which of course contradicts the actions of the gene.

 

[Msbear]

Thanks. I didn't think you were attacking me ...was just a joke about how I didn't know the meaning of the word. I give my opinions on things but am in no way and expert on genetics and enjoy learning as much as I can. When I saw the OP's roo, I initially thought it screamed splash x columbian but apparently that isn't possible.

I do know that, by having conversations with expert cochin breeders, there isn't another variety to cross mine with to improve type. Whites and blacks will both destroy the columbian pattern.