Spot-billed pelicans nest in colonies, usually in old trees; returning to the same trees and the same position each year. The breeding season is dependent on the rains, but on the Indian subcontinent pairs begin to construct their nests in September (4). The clutch of around two to three eggs is laid from October to November and the chicks fledge around three months after laying (4). Enormous colonies have been recorded in the past, when hundreds of birds nested in the same area of the forest, with up to 15 nests per tree (4).
Little is known about the feeding ecology of these pelicans; individuals appear to mainly hunt for fish prey on a solitary basis (4).