A fly buzzing around. The thumps are the fly bumping into the wall and a lampshade. This file is dry, so there's some low-frequency garbage from my holding the mic and following the fly. A high pass at around 200hz fixes that. Feel free to use this for whatever you want. 100% public domain.
This is a short file recorded in the ne suburban area of mpls. , mn. It is what the pond in our back yard sounds like after dark in may. Recorded with the built in mics of a marantz pmd660 at a distance of 30 yards from my deck.