White-shouldered Ibises

The White-shouldered Ibises (Pseudibis davisoni) are Asian ibises that are classified as Critically Endangered on the IUCN Red List of Threatened Species with only 310 of them having been counted during a 2009 survey.

Their continued existence is endangered due to habitat loss through logging of lowland forests and drainage of wetlands for agriculture.

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Distribution / Range

The White-shouldered Ibises are only found at a few sites in northern Cambodia, southern Vietnam, extreme southern Laos and East Kalimantan in Indonesia.

They inhabit lakes, pools, marshes and slow-flowing rivers in open lowland forest; as well as sparsely wooded, dry or wet grasslands and wide rivers with sand and gravel bars.


They measure between 75 -85 cm in length. The plumage is mostly dark with a distinctive pale collar which appears bluish at close range. It has been named for the whitish patch on the “shoulder.” The bald head is black and the legs are red.

Diet / Feeding

Ibises mostly feed in shallow waters on aquatic insects, mollusks, frogs, and food sifted from the water surface.

Their diet also includes insects caught on land, as well as lizards, worms, skinks, and other small reptiles.

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