abstract abstracts adult afternoon Age aged America Animal avian Barred Owl black blue blue sky brown calm calming cold colors cool cream earthtones evidence based feathers gray grey healng health Health Care healthcare hill hillside Landcapes lines new old oneness Owl pattern patterns peace peaceful raptor restful Seasons serene shade shape shapes sky sooth soothing state of mind strong sunlit sunshine Tennessee texture textures tranquil tranquility United States of America vertical weather Winter