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I was thinking about this topic when I was in the barn earlier. We've had leghorns in the past that always developed that brassy color which I assumed was from dust bathing, but remembered somebody who raised show birds telling me that was from feeding corn.
It seem the same things that darken the yolks can also tint the feathers of white birds; corn, marigold, cottonseed meal. I also ran across a reference to high amounts of iron in the water possibly causing brassy feathers.
I was thinking about this topic when I was in the barn earlier. We've had leghorns in the past that always developed that brassy color which I assumed was from dust bathing, but remembered somebody who raised show birds telling me that was from feeding corn.
It seem the same things that darken the yolks can also tint the feathers of white birds; corn, marigold, cottonseed meal. I also ran across a reference to high amounts of iron in the water possibly causing brassy feathers.