I was looking at my 5 month old silver wyandotte and I noticed some white spots on her feathers. Not the trademark "lacing" of the wyandotte, but little white specks, almost like dust, but white. Then, just to confirm, I looked at my 2 month old easter egger, and she had the specks too. I also saw some on my 4 week old black jersey giant. I haven't seen any on my mystery chicken, but I'm sure I will.