Ho trovato un'altra fonte che dice: It started with a White Giant pullet that had some
gray dusting on the feathers on her back. This
bird was a “sport” from the Miller White Jersey
Giant flock. Mrs. Miller wasn’t too interested in
experimenting but had a friend nearby in
Nebraska who was. Leo Prokop had been trying
with no success to develop a Blue Jersey Giant
variety. He took this pullet and mated her to a
Black Jersey Giant male. This first generation
was a conglomeration of colors, some of which
were splash. These females were again mated to
a Black Jersey Giant male. Out of this nucleus,
the Blue variety quickly became established.
No blue birds of other breeds had been
introduced, therefore these were pure Giants
Quindi la gallina bianca con le piume blu, è stata accoppiata con un nero, dal quale sono nati un conglomerato di colori e alcuni splash, che a loro volta accoppiati con alcuni neri hanno dato vita ai blu.