Plumbeous Ibis Theristicus caerulescens

Distinctive gray ibis with a white forehead and bushy crest. Favors marshes, rice fields, and ponds, but also occurs in grassland, pastures, and savanna. Eats insects, snails, and fish. Mostly seen singly or in pairs. Very vocal, especially at dawn, giving a fast series of cackling notes: "kah-kah-kah-kah-kah-kah-kah."