Natural recordings

[Gilad Jacobson <giladj@xxxxxxxxxxxxxxxxxxx>]

Dear list,

I am looking for recordings of natural sounds recorded in the field. The
main problem with the databases we have come across so far (e.g. Cornell
library of Natural Sounds) is that a lot of the recordings are low-passed.

Does anyone know of sources for natural recordings that were performed
with microphones that have a wide frequency range (up to 20kHz or higher)?

Thanks,

Gilad