Long-billed, medium to large usually gregarious birds, feeding, roosting, and flying together, often in formation. They are often found in or near wetlands.
They have long, broad wings and they are strong fliers and, rather surprisingly, given their size and weight, very capable soarers. The body tends to be elongated, the neck more so, with rather long legs. The bill is also long, decurved in the case of the ibises, straight and distinctively flattened in the spoonbills.
All ibises are diurnal; spending the day feeding on a wide range of invertebrates and small vertebrates: ibises by probing in soft earth or mud, spoonbills by swinging the bill from side to side in shallow water. At night, they roost in trees near water.
They are monogamous, breeding solitairy or in loose colonies, nests and eggs vary widely within the group. They have clutches of 2 - 3 eggs. Incubation and care of young is done by both sexes.

Bostrichia = curved
Platalea = spoonbill
Plegadis = sickle
Threskiomis = regilious bird

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