Around 150 species of feathered creatures are known to gather at forested Kumarakom Bird Sanctuary (keralatourism.org). This 5-hectare nature reserve on a former rubber plantation on Vembanad Lake provides a refuge for local birds such as pond herons, egrets, little cormorants, kingfishers and Indian shags; as well as migratory species (October to February), including ospreys, garganey teals, marsh harriers, Siberian cranes and steppe eagles. First thing in the morning is usually best for bird-spotting. Bring binoculars, insect repellent and comfortable shoes. The sanctuary was undergoing renovations at research time, so it's best to check up-to-date visiting arrangements locally.