As we discussed above, woodpeckers need more man made houses because so many trees have been cut down. The natural way for woodpeckers is to drill out holes in trees and nest in them. You'll be helping to preserve these beautiful birds by putting up woodpecker houses on tree trunks in your yard. The dimensions of this house by Coveside Conservation are for a Downy Woodpecker. It is the smallest woodpecker in America and loves to eat suet and seed in backyards. These friendly little birds enjoy being around people. The house comes standard with a slate guard around the entrance hole to stop squirrel making it larger. Also, the house comes with wood chips to give them a jump start in making a nest.