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
| 424:15 Platycleis stricta (604r5) | 5:23 · David R. Ragge |
| Platycleis stricta |
The fully developed calling song from a stationary male consists of short echemes interspersed with much longer ones and often continues for several minutes. There about 4-7 short echemes, repeated at intervals of about 0.3-1.2 s, between successive longer echemes; the shorter echemes last about 50-100ms and the longer ones about 1-2 s. Oscillographic analysis shows that the short echemes consist of a macrosyllable lasting about 20-30 ms followed by a series of about 3-4 microsyllables, each lasting baout 1-5 ms and repeated at the rate of about 50-55/s. The longer echemes follow immediateky after a shorte cheme of this type and consist of a dense sequence of about 90-170 macrosyllables repeated at the rate of about 60-90/s. The syllable sin these larger echemes are in groups of three (occassionally four) in which the first one is the quietest and shortest (lasing about 8-12 ms) and the last one the loudest and longest (lasting about 15-20 ms); each gorup lasts about 40-45 ms and the groups follow one another without any intervening pauses. Opening hemisyllables, always quieter than the closing hemisyllables, arte usually present in both the shorter and longer echemes (and are included in the syllable durations above). There are often small groups of microsyllables interrupting the regular flow of the longer echemes. While singing males are moving they generally produce only the short echemes.