I’ve been working on a similar project for the last few weeks in spare time.

I’m using a AudioMoth USB mic so I can capture extremely high sample rate and also ultrasonic for bat detections.

https://github.com/simonjgreen/OpenObservatory

Disclaimer: I’m also using this to see how far I can push supervised pure AI coding before it turns to mega slop, so know that before you dive in with the disparaging comments :D