Abstract:

This paper describes and analyzes the structure of the wave form and parameters of the song characteristics of Larus Dominicanus in the Fildes Peninsula, Antarctrica under different ecologic behaviour. After analysing and processing the sound signals in laboratory, we obtain four kinds of continuous sound signals in different behaviour. (1) The frequency of signal "zhi" made by a juvenile Larus Dominicanuswas 1610. 4-4831.2Hz. The spectrum crests in this frequency range mainly concentrated on 1.7, 2.5 and 2.9kHz. (2) Larus Dominicanus made signal "e" with a frequency of 1171.2-4343.2Hz. The spectrum crests in the frequency domain concentrate on about 1.5kHz. (3) The frequency of signal "ea" made by the Larus Dominicaus was 1072.5-3932.5Hz, and its spectrum energy in this frequency range mainly concentrated on 1.2, 1.7 and 3 kHz. (4) The frequency of singnal "ge" was 1360.5-4153.5Hz. The spectrum crests focussed on 1.3, 2 and 2.9kHz.