BioAcoustica is a free, open repository of wildlife sound recordings from the Natural History Museum, London.
Taxonomic index of the BioAcoustica collection
Acoustic and biological measurements in the BioAcoustica collection
Recording annotations from ann-o-mate
The specimens that recordings are of, from the collections
Where the specimens that recordings are of were collected, not where the sound was recorded
In the calling song of M. helleri, echemes with duration of 0.1 to 1.5 s are produced with intervals of about 2 s (Ciplak et al. 2006). The echemes contain 3–7 (rarely 2–8) syllables with a few microsyllables at the beginning (Fig. 7K). The syllable repetition rate of the macrosyllables is about 6 Hz, distinctly lower than in the other Montana species mentioned above.