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The BES Drongos are a group of nature lovers from the Bachelor of Environmental Studies (BES) programme at the National University of Singapore (NUS) who have come together to manage guided walks open to everyone and anyone. We want to bring people to appreciate and understand local biodiversity and our ecological systems in Singapore through our guided walks on the Petai Trail at Macritchie Reservoir Park. 

Sign up for a walk and follow our adventures on our blog and like our Facebook page.

Contact us: drop us an email at or message us through our Facebook page.