I stand corrected. The Red Bellied woodpecker does have a small smudge of a reddish hue on their underside. This was pointed out to me by a forum denizen and I thank him/her for the info. Never having seen one before I looked this bird up in a book entitled Birds of Eastern North America that also makes the claim there is no red belly, I guess it's a matter of perspective, there is a slight reddish smear underneath that if you don't see it from the correct angle, you could very easily mistake it for a shadow or dirt. Still waiting for the bird to reappear but nothing yet.