The Straw-necked Ibis is a large ibis widely distributed in Australia. It moves in search of suitable habitat and forages in shallow water and on the ground.
The upper body is metallic dark green-purple, contrasting with white underparts. The nape is white, the head is bare and black, and straw-like feathers hang beneath the long curved bill.
It moves alone or in groups in search of suitable habitat. It probes mud in shallow water and also feeds on the ground.
It eats insects, aquatic snails, small frogs, and lizards. For breeding, it builds a platform of trampled reeds and sticks over water; both sexes help build the nest and care for the chicks.
It flies with the neck and head stretched forward, and flocks form V-shaped formations. It often perches high in bare trees.
It breeds in large colonies, often with other species. A large cup-shaped nest is built on a trampled platform over water, and nests are reused in later years.
Some birds migrate to New Guinea and Indonesia in winter.
Young birds lack the straw-like plume and have black legs; adults have red legs.
An extinction-risk assessment has not been added yet.