I don't know where white Phoenix usually have come from, but in chickens generally, Recessive white can pop up in birds of almost any color.
White plymouth rocks are a common recessive white bird. Two Barred Plymouth Rocks which carry the gene can produce a white chick.
If your silver birds both carry the "c" recessive white gene one would expect 25% white chicks over the long haul.
White plymouth rocks are a common recessive white bird. Two Barred Plymouth Rocks which carry the gene can produce a white chick.
If your silver birds both carry the "c" recessive white gene one would expect 25% white chicks over the long haul.