Ibis

The ibises (collective plural ibis; classical plurals ibides and ibes) are a group of long-legged wading birds in the family Threskiornithidae. They all have long, down-curved bills, and usually feed as a group, probing mud for food items, usually crustaceans. Most species nest in trees, often with spoonbills or herons. The word ibis comes from Greek and Latin, and probably from Ancient Egypt.  Source