This October 2018 video from the USA says about itself
8 Hours of Beautiful Birds (No Music) 4K Nature Relaxation™ – Washington State
Relax and calm your mind thanks to a dazzling display of colorful and ultra high definition bird & forest scenes from Washington State. Featuring ambient nature sounds only (no music), its also paired with subtitles informing the viewer of the species. Thanks to the 8-hour length, this film is designed for all-day playback and is perfect also for nursing homes. All video was shot in 4K ultra high definition in Washington state by John Light (Naturescapes), and is available without any watermarks for download or streaming via Nature Relaxation On-Demand & Apps. Produced by David Huting.