Interesting article about the manufacture of microphones for recording wildlife.
https://f1000research.com/articles/7-1984/v1
Perhaps, it would be interesting to design an Audiomoth with connections for an independent microphone, which would allow both its calibration or replacement in case of degradation of its properties, and the use of microphones adapted to the range of frequencies to be studied.
Thanks for that link....nice overview.
Thanks for the link and idea, definitely worth exploring.