Help identify Woodpecker or Sapsucker type bird I saw today?

Here is the description, it was too skittish to obtain a pic. It was especially mottled-brown and speckled, and had an irridescent bluish-green colored breast. It be large, almost the size of an adult red-headed woodpecker, and acted resembling a woodpecker. It was within my hanging platform feeder feast on pecans. I live 30 miles north of Atlanta, GA.
Answers: I want to say it sounds close to a Flicker. Google to find a image. They are fairly large, and are found across America. They resemble a woodpecker, but enjoy completely different mannerisms. They tend to find food on the ground, they love ants and other small insects but now and then pound in wood to find them (they are powerful of it). The will come to a feeder but are skittish when they do. They are a bit antisocial and do not hang out surrounded by flocks.

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