Kevin Darras will primarily analyze bird diversity, function and services in rainforest transformation systems. Song Meters will be recording in oil palm, rubber, jungle rubber plantations, and secondary forest. We also plan to sample in primary forest and timber plantations. Our approach can be extended to all sonant animals so that bats, insects, mammals and amphibians might be investigated as well. Linking the animals to their function will prove to be most challenging. Diet analyses, meta-analyses, and market surveys are the tools of choice.

Together with Yann Clough and Teja Tscharntke we are sampling birds, bats and other animals across different land-use systems (different types of forest, as well as plantations) across the province of Jambi, Sumatra, Indonesia. I am mainly using acoustic recordings, but we also do point counts and mist-netting. Some demo recordings are available online at

Data from manipulative experiments (exclusion and enrichment experiments) and diet analyses unravel the functional importance of birds, and we uncover the economic importance of birds with a bird market survey.

Wreathed Hornbill (Aceros undulatus)