This brightly coloured bird gathers in large flocks during the mating season. Members of one same colony pair up to reproduce and build their nests in trees close to water.
Just as with other ibis species, the Scarlet Ibis finds its food principally by tact and not sight, for which it plumbs the soft mud with its long and gently curved bill, generally while it walks. It feeds on the ground during the day, but at nightfall it flies to waterside trees to rest in them. This behaviour reduces the danger of being attacked by predators at night.