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She is molting in this picture, but you can see all the white on her chest. She also looks like she has some ticking on her head (though some of the white on her head in the pic is new quills). Her back and wings are solid gray and her chest and head is really the only place this bird has these white markings.
When I was reading about pied Javas, I came across someplace where it said that a normal grey Java will have no white on it anywhere except its cheeks and under its tail. This then made me question my male, who has one wing that is trimmed in white. I read that this could be a sign that he is split to pied?

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What color mutation do you think these two are?