Ansonia torrentis Dring, 1984

BM 1978.1553 was recorded in the field at 15.5^oC air temperature. Calls are metallic ticking notes in 'continuous' or very long series (fig. 2a). When calling strongly, elements are repeated witha period of 0.13-0.18 sec (mean 0.15). Each call is composed of a strong, poorly tined notes, 0.03 sec in duration, followed by two or three very weak notes (which may be passively produced by vibration in the larynx), to form series 0.06-0.09sec in duration. Dominant frequency is at 5-6khz, with energy of the poorly tuned notes spread over the range 4.2-7.0khx. Frequency modulation and, with the exception of the 'passive' notes, amplitude modulation are absent. [1]

Referenser