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|Mutation type||Colour modifier|
|Description||"Spreading" of tail bar colour throughout the bird, so as to create a black pigeon on blue/black pigment.|
|Commonly found in breeds such as||Many, most breeds|
Spread is an autosomal dominant mutation. This means that only one parent of either sex needs to carry the mutant gene for it to express in the next generation. Unless it is hidden by another modifier, a pigeon not expressing this trait will not pass it onto its children.