They almost look alike from the distance, the Downy Woodpecker and its cousin the Hairy Woodpecker, but body size and length of their bill make it easy to distinguish one from the other species. Also their calls and vocal expressions are different. We have about seven or eight Downies here during the winter but only two of the larger Hairys. Their behavior during an approach couldn’t be more different. While I can walk up to a Downy Woodpecker feeding on a block of suet, the bird will eventually fly away when I’m within a 3 feet distance. The Hairy Woodpeckers in comparison are extremely skittish. As soon they detect a slight movement or noise, i.e. from opening the door, even 30 feet away, they will take off and fly into the trees. And that makes the photography of the larger woodpecker a much bigger challenge.
Both pictures were shot from an open window today. The Hairy Woodpecker flew away when I opened it, but finally returned back to “woodpecker tree #1” in the front yard after five minutes. Getting the shot of the smaller Downy was easy. They patiently wait in line when a larger woodpecker is at a feeder or they jockey with each other for the right to feed first.
The photos today give you an idea about their different body sizes. Both were shot from the same distance and are cropped to identical size. The dominant knot on the tree is the same in both pictures and helps to evaluate.