This Thread will be the Continuity of below thread, but will be dedicated just for this, to discuss the ideas on how to go about creating a bird with Blue grown color with black spangling..
this is the first quote of the above link and a a few answers taken from that thread
Googling around on the web I've been struck with the lack of blue spangled chickens- that is, chickens with a blue ground color spangled with black. I'm beginning to suspect that is a genetic impossibility
I am not aware of any version of black that isnt diluted by andalusian blue.
of all of us Tim and Saladin believed this was possible
I think you may (hypothetical) be able to produce a blue spangled bird ( blue base color with black spangles). The bird would carry extended black (E), melanotic (Ml), dark brown (Db) and pattern (Pg) and heterozygous for blue Bl/bl. It would not make any difference if the bird was silver or gold.
My rational is that birds that are blue can express black i.e the black pyle zone in andalusian males and lacing or edging in male or female andalusian. It is the black produced by the pattern gene and melanotic that will stay black and not be diluted to blue. The black which is due to the extended black gene will be diluted to blue.
The pattern gene and dark brown gene will form the black spangle.
That would be an interesting project.
I agree with Tim completely. You can/should be able to produce a bird with a blue background that has was appears to be black spangles. The spangling will most likely be irregular but it does happen. I'll see if I can get some pictures posted within the next week that show this. Off subject: I do have a rather striking Blue Spangled Asil stag....
pics on following post....