Black Birds not based on Extended Black

[Rootball]

What are the genotypes of black birds that are not based on black, say for instance birds that are based on eb?

 

[Sonoran Silkies]

eb plus lots of melanizers, many unknown.

 

[Rootball]

So if you want to get a black eb bird you cant be sure exactly how to get there, but starting with another black bird is a good start eh?

 

[Sonoran Silkies]

pretty much

 

[nicalandia]

Quote:
if you want a eb based black bird you should start with an already eb based black bird, like black wyandottes, but if I think their genetics are....eb/eb, Mi/Mi Cha/Cha charcoal, and Hackle Black, and some other unknown melanizers

There is a recessive melanizer in 'chocolate-partridge' wyandottes - yielding virtually all chocolate birds, which in the absence of chocolate would otherwise be black.....

 

[Krys109uk]

There is a recessive melanizer in 'chocolate-partridge' wyandottes - yielding virtually all chocolate birds, which in the absence of chocolate would otherwise be black.....

That's interesting....

I have not heard this before.....where can I read more about it?​

 

[Henk69]

Extended black based black:
E//E with melanizers
females might be full black without any additional melanizers.

Birchen based black:
E^R//E^R with melanizers

e^b based black:
e^b//e^b with melanizers

They could all have the same melanizers but the minimal amount needed would need to be increased from top to bottom.
Melanotic Ml works better on females, which might be an explanation why pullets are still full black after crossing with non black chickens.

Crossing silver spangled hamburgh to extended black chickens gives black females and incomplete spangled males (more silver leakage) due to the Db gene.
But when the males are plucked and washed in female mammal urine they feather out black also!

 

[tadkerson]

I believe that eb black birds may also contain Pg or the pattern gene. If I remember correctly, black wyandottes were developed from gold laced wyandottes. Do not ask me for a reference, I have read too many papers to remember.


Tim

 

[Henk69]

That brings me to the most typical thing of e^b based blacks:
The columbian gene can express on this background which would lead to quail or lakenvelder pattern, and in case there is also Pg: (single) laced. Extended black and Birchen do not permit that kind of expression.

 

[Sonoran Silkies]

Quote:
Why...? And why would someone do that?