Recording pre-dawn forest silence can be deceiving. We think nothing's out there, that nothing's awake. After all, our ears confirm it for us don't they?
Little do we know, and little can we tell, but there's a whole world of life up where we can't hear it. In fact, it's a life that' so loud, that our recordings can distort without us even hearing it.
The bat vocalizations in this recording, and YES THERE ARE BAT VOCALIZATIONS IN THIS RECORDING, spike nearly 30db above the ambient background. Check out this little re-mix experiment I did over here to illustrate: https://soundcloud.com/soundeziner/sets/bat-mix
Recording Errata:
Sound Devices 702
mid: MKH8020
side: MKH30
Biophony: BATS!
Geophony: Beckler Creek, a silent forest in the Mt Baker-Snoqualmie Wilderness