Ultrasonic Audio Recorder for Bat Detection

I am looking for an expert to create a Spresense audio recorder primarily for wildlife ultrasonic recording. The project focuses on detecting the presence of specific species, particularly bats. The ideal professional for the job should have:

- Experience in ultrasonic audio recording equipment design
- Knowledge in wildlife tracking and detection, particularly in bats
- Proficiency in handling Spresense micro-controller for audio recording to SD card

This project aims to help understand and monitor bat behavior in their natural habitat by analyzing the recorded ultrasonic sounds.