Fig. 1
Spectrogram showing the terminology used in the text: a = single syllable; b = two elements of the syllable; c = phrase with syllables; d (arrow) = high frequency; e (arrow) = low frequency
Fig. 1 | Avian Research
Spectrogram showing the terminology used in the text: a = single syllable; b = two elements of the syllable; c = phrase with syllables; d (arrow) = high frequency; e (arrow) = low frequency
Avian Research