This HUD continuously plays various random daytime outdoor sounds. Nearby avatars will be able to hear the sounds too. Touch the HUD to turn it off.
Many sounds from the "Bird Sounds HUD" are included as well as various additional daytime enviornmental and animal sounds such as animals scampering through leaves; a gust of wind; wind blowing through trees; cricket, dragonfly, cicada, bee, fly, and frog sounds; squirrell, chipmunk, and sea lion calls; the distant bark of a dog; a cat's meow;and a mouse squeaking.
This HUD works nicely in conjunction with the Nature Sound Menu HUD.
See https://marketplace.secondlife.com/p/Nature-Sound-Menu-HUD-and-wearable-in-world-version/20270327
Also see the "Nighttime Sounds HUD.
https://marketplace.secondlife.com/p/Nighttime-Sounds-HUD/20529537