When you first see a Red-bellied Woodpecker (photo below-left), you might find it curious it is not called a Red-headed Woodpecker. Once you see the woodpecker named "Red-headed" (photo, below-middle), however, it does make sense that the Red-bellied needed a different name. Personally, I find it a bit of a stretch -- but if you look at the photo, below-right -- you will see a slight red blush on the belly of the Red-bellied.
So now -- we can get to the story. Red-bellied Woodpecker: Don't You Just Hate It ...
In this video you will discover the "...".
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Red-bellied
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Red-headed
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Red-bellied's Red Blush