The Acoustic Partitioning of Bird-Insect Vocalisation during Dawn and Dusk Choruses in Real Living Lab (RLL), UNIMAS

Nur Aliya, Mohd Asri (2022) The Acoustic Partitioning of Bird-Insect Vocalisation during Dawn and Dusk Choruses in Real Living Lab (RLL), UNIMAS. [Final Year Project Report] (Unpublished)

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Abstract

Acoustic signalling is important in animal’s communication, especially in birds and insects because it is often used in their daily activities. When the sounds in a habitat overlap, the animals tend to perform acoustic partitioning to avoid their sound being masked by others. This study was focused on determined the acoustic partitioning between the insect’s vocalisation and the birds during dawnand dusk by analysing the minimum and maximum frequency, amplitude and call duration. The sampling site that was chosen for this study is Real Living Lab (RLL) which is a peat swampforest located in Universiti Malaysia Sarawak (UNIMAS) east campus. The vocalisations that are produced by birds and insects will be recorded by Autonomous Song Meter 3 (SM3) for a total sampling of 7 days. Raven Pro (version 1.6) was used to analyse the data based on spectrograms generated and the statistical test that was used in this study is Principal Component Analysis (PCA) to indicates which family of birds that are correlated with the insect. Based on the spectrograms, 50 bird species from 12 Orders and 23 Families were identified during dawn and dusk. The vocalisation of some families of birds were overlapped with the insect choruses. The acoustic partitioning between birds-insects can be seen and there is also acoustic partitioning between the bird's family.

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