Bellanwila-Attidiya Bird Sanctuary (බෙල්ලන්විල අත්තිඩිය අභය භූමිය) is a hidden gem for birdwatchers near Colombo. Situated near the Bellanwila Viharaya in the Colombo District, this sanctuary covers 372 hectares. The sanctuary features forested wetlands, including mangrove swamps and freshwater swamps. Early mornings are magical here, as dawn breaks, observe the rich bird life freely moving around, preening themselves for the day. Silhouetted against the orange dawn, visitors might even glimpse the dark outline of the Adam’s Peak mountain range. A study by the Society for Environmental Education recorded 166 bird species in the area, with most being residential and around 40 migratory. Rare birds include the Indian Shag, Blue Breasted Banded Tail, and Ruddy Crake. Visitors might spot the elusive Glossy Ibis, believed to be migratory. The sanctuary also hosts 71 species of butterflies and 44 species of fish.