Dark-eyed Juncos little sparrows that flit about forest floors of the western mountains and Canada, then flood the rest of North America for winter. They’re easy to recognize by their crisp (though extremely variable) markings and the bright white tail feathers they habitually flash in flight. One of the most abundant forest birds of North America, you’ll see juncos in the woods, at feeders or the ground underneath them . This sweet little junco was just hanging out on this cold wintry day in Nuangola, Pennsylvania. I thought the expression she had was adorable.