I just avoid the term loud pied when talking to anyone other than a couple of breeders. I just describe the birds as to what they are genetically. The eye color and masking issue is because this is a pied white eye bird and not a silver pied. With regards to loud pied, I have never found a written definition of "loud pied" but I have heard it used to describe a pied bird with a single white eye gene. Some of those birds are obviously nicer than others. I doubt we are ever going to get everyone to agree on a definition.
I'm not trying to be difficult, it just worries me that until/unless we agree on what exactly a silver pied pea looks like, how can we define the genetics required to breed one? That said, I worded my search differently this time and found an article by
Brad legg. This isn't the whole article, I couldn't figure out how to link to it.
History of the Silver Pied Peafowl Mutation
by Brad Legg
The origin of the Silver Pied Peafowl started around 1992; Silver Pied is a pattern mutation, not a color mutation. The color on the Silver Pied bird is the same as on a India Blue. Silver Pied is a combination of the Pied and the White-Eyed gene working together with the White gene. These Silver Pied birds originally showed up in three flocks, one bird from each flock, across the United States around the same time in 1992.
India Blue Silver Pied Pair
Black Shoulder Silver Pied
What is known today is that all three original birds trace back several generations to one bloodline, White-Eyed peafowl. The White-eyed peafowl, birds with white eyes in the train, founding breeder was Ernie West of California.
The White-eyed peafowl was later bred with the India Blue Pied, which is recognized today as India Blue Pied White-Eyed.
When breeding the India Blue Pied White-Eyed to itself for some years its like this variety compounded itself with the white gene and then created the new pattern mutation, Silver Pied. Essentially the Silver Pied is a White bird with 10% to 20 % color on it compared to a India Blue Pied White-Eyed bird that is a colored bird with 30% to 40 % white on it.
What seems to be the link that helped create Silver Pied were the White-Eyed peafowl, which traces back to the White peafowl. Without the White-Eyed peafowl there would not be any Silver Pied peafowl today.
Purple Silver Pied
Cameo Silver Pied Genotypically, the Silver Pied males have White-Eyed feathers in the train. Phenotypically, the Silver Pied males can have pure White feathers in the train. This is because the White gene has mask the White-Eyed feather in the bird. Genotype is the genetic make-up of the feather. Phenotype, is the visual make-up of the feather.