Like most ibises, this bird has a long, downwardly curved bill, which gives its silhouette a very particular appearance. In poor light it can look very dark and black, and when perched on the trees they may resemble black vultures, until the bill is distinguished. Their plumage is green overall. Their defining feature is the lack of feathers in the face, which sets it apart from the Green Ibis. They can be very noisy at dawn and dusk, specially if traveling in large groups. They forage mostly in the ground, in grassy fields or swamps where they can catch small invertebrates.