Not yet hosting, but preparing to: https://github.com/Nachtzuster/BirdNET-Pi You run a raspberry pi with a microphone and it automatically detects and recognises birds it heard. You can then see what birds live in your area and when. Really cool

It also supports Beken bk72xx chips which are often found in cheap Tuya devices. I have them all reflashed with ESPhome which eliminates the cloud middleman https://esphome.io/components/libretiny

3,8 km seems pretty close to me