Does anyone know what causes it? I have just seen a big breeder show pic of a chick with one I have 2/5 chicks so far with bald spots this year. The chicks were totally unrelated:- a java (small spot) and a white "pied" with a larger one. I must have hatched 60 peachicks in the past few of years and only had 2 before, and they came from the same batch of eggs. Does it grow back? If so when, and does it look normal eventually? I think on a light bird it may look ok as an adult but on a Java ?? Any thoughts?