Woke up early. There was no worm. Better try again tomorrow! National parks are home to a great diversity of birds. Many more pass through during migration. On #NationalBirdDay, casual observers and hardcore birders alike can experience the joy of birds and birding in a national park. Image: Northern cardinal in the snow at @shenandoahnps, Virginia. #birdistheword #birding #cardinals #redbird #birdsofinstagram #shenandoahnationalpark