The Downy and Hairy are nearly identical except that the Hairy is almost twice as large.  Additionally, the beak on the Downy is small and dainty.  The Hairy’s is a club by comparison.  Below is a Downy.  Check out the small beak.Downy Woodpecker

Downy.

Downy Woodpecker

Downy.

Downy Woodpecker

Hairy.  Notice the beak size.Hairy Woodpecker

Hairy.dsc_0001_29

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