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
The calling song of two males was recorded (one viewed in g. 2). It consists of a long sequence of echemes (chirps) lasting several seconds (5-6 s), comprising about 32-43 macrosyllables and often ending with 5- 6 microsyllables. within one echeme the syllables are fairly uniform in duration and are repeated at the rate of about 30 ms. The analysis of the oscillogram shows that opening hemisyllables are absent, as reported by Ragge & Reynolds (1998) for males from southern France. The closing macrosyllables lasted for 105-110 ms and the microsyllables 5-10 ms at 19°c, at night (22oo).The macrosyllables were repeated at an ascend- ing rate from 45 to 60 ms. The microsyllable sequence, at the end of an echeme, lasted for 0.6 s at the most. The echemes began quietly, reaching a maximum, and remaining at this intensity, after four to eight syllables, until the call ended. almost all macrosyllables ended with one, or two, strong strokes. The song shows some similarities with that of P. af nis (see Schmidt & Schach 1978).