We examined the stomach contents of three carcasses of the Crested Ibis Nipponia nippon (two reintroduced adult males and one wild-born juvenile male). They included loaches, nymphs of dragonflies and mayflies, mole crickets, aquatic beetles and bugs, carabid beetles, tenebrionid, pond snails and freshwater bivalves, some of which have not been reported as prey in Japan. Judging from the body size and abundance of the prey, the Crested Ibis is likely to prey on invertebrates of at least 7 mm in body size in the wild. Further research on its feeding habits and prey items may help contribute to the success of the reintroduction program for the Crested Ibis.
