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
Totally 13 records from two males were examined. The calling song consists of phrases (Figure 1B, C), which have quite variable durations. Phrases structure is different from all other species in the genus and comprises approximately triple syllables group series. Phrase duration varies between 1.59 and 17.12 s (4.35 ± 1.86) and each phrase contains 29–121 (62.44 ± 8.7) triple syllable groups. However, phrases generally begin with double syllable group and last with quadruple syllable group. In a triple syllable group, syllable durations are quite similar, but have different amplitudes (low-middle-high amplitudes; in first, second and third syllable, respectively). Oscillographic analyses show that triple syllables group periods durations vary between 43.92 and 82.88 ms (52.81 ± 1.16). The first, second and third syllables durations in group last for 12.76–17.87 ms (15.11 ± 1.16), 13.68–18.81 ms (15.66± 1.02) and 12.49–17.47 ms (15.67 ± 1.05), relatively. Each syllable shows almost a standard structure which is formulated as soft opening hemisyllable + loud closing hemisyllable (Figure 1D). Each closing hemisyllable begins with low amplitude, reaches the maximum level at the midpoint, and at this point it ends by decreasing.