downy woodpecker

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A North American woodpecker (Picoides pubescens) having a small bill and black wings with white spots.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zool.) A small black and white ladder-backed woodpecker (Picoides pubescens) of Central and Eastern U. S. and Canada. It strongly resembles the hairy woodpecker, but is smaller (6 1/2"), compared with about 9-1/2" for the hairy. it is common in suburban backyards.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun small North American woodpecker with black and white plumage and a small bill