Living on Earth featured a marvelous conversation this week with Bernie Klaus, trained musician who is now an "acoustic adventurer." Listen to the miraculous sounds he has recorded, including a haunting symphony by two packs of wolves, the scraping of insects' wings and sap moving inside trees. Remarkable!
Borror Laboratory of Bioacoustics archive in the OhioLINK DMC. The Birds of North America also offers audio files, as does Grzimek's Animal Life.
Klaus remarked, toward the end of the Living on Earth segment, that "the sounds of the natural world are the sounds of the divine." You may share that conviction after listening to his recordings.