It was that sound but it was right next to my head, camouflaged by the tree it was occupying. I had no idea what it was and didn’t detect its visible presence.

It was that sound but it was right next to my head, camouflaged by the tree it was occupying. I had no idea what it was and didn’t detect its visible presence. I assumed it was many feet away. Wasn’t for days that I understood it was an insect.