Do the two different morph looks of the offspring fall along gender lines?

Some day we might run into a mutation on the z chromosome that would look different in males (zz) than females (zw).

If the two looks aren’t segregated by gender I would go with one of the other poster's idea that the male is a combo of different mutations on different genes. Maybe one of the mutations looks pretty normal but when it happens to combine with the more visible standalone one is making the 2nd visible morph type. But in this scenario the dad would have to be a the combo too. So maybe see which type looks more like him as they grow.

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