Western Mediterranean Wetlands Bird Dataset The files structure of the dataset is: ----> audio_files.zip | | ------> Contains one folder per each bird species. Inside the folder, different .mp3 files can be found. Each .mp3 file has its own labels file with the structure [start_time end_time label] of the vocalization. ----> spectrograms.zip | | ------> Contains one folder per each bird species. Inside the folder, different .npy files can be found. Each .npy file corresponds to a 1-second length spectrogram of the species. ----> metadata.csv | | ------> Metadata file that stablishes a relation between the bird vocalization, the Xeno-Canto file and the spectrogram fime.