I used an old margerine pot, wrapped in parcel tape! Worked fine, and there were some fairly heavy downpours last week. For a membrane I used cling film...having punched a small hole in the case itself.

Thanks for this. That' helpful. I seemed to have had more success by hosuing the AudioMoth in a small box that is water tight, and drilling a small hole that is covered by a membrane. I agree, I dont think this will last long in a hostile environment. I will post some sounds - first I need to write some tooling to help look for something interesting in several thousand samples! I'm a bit rusty on my FFTs, but I'll post my code to github if I can get something working. If anyone has anything that will do this already, I'd be interested in finding out more? Cheers.