{"data":[{"source":"bio.acousti.ca","id":"47738","topic":"behaviour","value":"A typical verse of L. fuscus calling song is a short, irregular chirp made of discrete sound syllables (mean syllable number\u00b1 SD = 30\u00b1 2) (Fig. 30a, Table 1). It typically begins by a group of 1-2 syllables and is accelerated at the end. The syllable duration is almost constant (8\u00b11ms), whereas the syllable period is highly variable (19\u00b1 8ms). Mean fundamental frequency of the song is 6.0-6.3 kHz (Fig. 30b), with no significant difference between the whole chirps and single syllables.","topic_link":"http:\/\/rs.tdwg.org\/ontology\/voc\/SPMInfoItems#Behaviour","info_url":"https:\/\/bio.acousti.ca\/node\/47738"}]}