In order to gain hands on experience in bird observation and avian diversity, DIMO Nature Club organized a two-day field excrusion to Anawilundawa Wetland in December, 2023. the Anawilundawa Wetland Sanctuary covers an area of 1,397 hectares and is one of Sri Lanka’s 6 designated Wetlands of International Importance - Ramsar Sites. The sanctuary is considered unique for its collision of 3 distinct eco-systems: the forest wetlands (including the mangrove- and freshwater-swamps); the coast’s saltwater ecosystem; and the freshwater lakes. The sanctuary benefits from an ancient system of giant manmade tanks built in the 12th century. And it is home to more than 150 species of birds; 20 species of mammals; 70 species of butterflies; and more than 50% of Sri Lanka’s freshwater fish species. 26 DIMO Nature Club members were took part in the visit and the visit was guided by bird expert Mr. Dulan Vidanapathirana.