, Home Contact About Bird Guides Birder's Lists Birding Birds Reviews Trips From the Archives Privacy Policy Home Contact About Bird Guides Birder’s Lists Birding Birds Reviews Trips From the Archives Privacy Policy Lists Knock , Knock â My 10 Favourite Woodpeckers October 10, 2024 by Leslie Kinrys 3 Comments Woodpeckers are a fascinating family . They bang away at trees with their beaks , without knocking themselves silly . They excavate nest holes , which later become homes for other birds and small mammals , making them a keystone species . There are 22 species of woodpeckers in the US and Canada . I have seen 21 of them . Here , I share my . favourites The Acorn Woodpecker is found in the Western US . This clown-faced woodpecker lives in colonies . They feed on acorns , harvesting