The Sri Lankan subspecies of the crested serpent-eagle (Spilornis cheela spilogaster) is widely distributed across the island, inhabiting forests and scrublands. These birds of prey are easily identified by their striking yellow cere, eye rings, and legs. 

A diurnal and non-migratory species, crested serpent-eagles primarily hunt snakes by swooping down from high perches. Their diet also includes lizards, frogs, and small rodents. They build nests in trees near water sources, using sticks and twigs lined with fresh green leaves. Typically, they lay a single egg, though clutches of two have occasionally been observed.