We just heard giggling and chatter from female voices two months ago. Didn't get recorded (too far from the recorder). We were in the middle of nowhere, on a mountain mushroom hunting, and there was no one around us - I'm guessing it could have been sasquatch juveniles talking. It was fascinating but it spooked us so much, and happened so suddenly, that we should have just stopped still and recorded on my phone, but instead, we made a hurried retreat to the truck. Wish we had stayed put. We also hurried just to see if a car had pulled up somehow without us hearing it (absolutely unlikely but possible).
I'm thinking maybe an evening/dusk operation - just bundle up and sit on the mountain as night falls. Put audio recorders everywhere. Just see what happens and record all of it. We've had several things happen on that mountain, besides chanterelles!
Stan Courtney's website database might have some recordings. Do a google search.
@GuyInIndiana I'd better bring two pairs of pants, because after that first yell, I might need a new pair! Absolutely amazing audio.