BirdWatch

This repository accompanies the paper Time-frequency localization of bird calls in dense soundscapes and contains two components:

birdbox/	Julia toolkit to train and run YOLO and RF-DETR bird call detectors on raw audio
birdwatch/	Tool to annotate and analyze spectrograms in the browser

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BirdBox

BirdBox localizes bird vocalizations in time and frequency from raw audio using custom-trained YOLO11 and RF-DETR models. It includes detectors pre-trained on complex soundscapes from Singapore, along with tools to apply them to new recordings and train custom detectors.

See birdbox/README.md for setup and usage.

BirdWatch

BirdWatch is a browser-based annotation and analysis tool for spectrograms that supports bounding-box labeling, playback of selected time–frequency regions, and evaluation of model predictions, with all processing performed locally in the browser.

See birdwatch/README.md for usage, or open the app directly: BirdWatch →

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Citation

@misc{hexeberg2026timefrequencylocalizationbirdcalls,
      title={Time-frequency localization of bird calls in dense soundscapes}, 
      author={Simen Hexeberg and Fanghui Tong and Hari Vishnu and Mandar Chitre},
      year={2026},
      eprint={2606.10407},
      archivePrefix={arXiv},
      primaryClass={cs.SD},
      url={https://arxiv.org/abs/2606.10407}, 
}

License

MIT — see LICENSE.