Family Ibises, Spoonbills (Threskiornithidae)

Least Concern

Plumbeous Ibis (Theristicus caerulescens)


French: Ibis plombé German: Stirnbandibis Spanish: Bandurria mora

Ibis caerulescens


, 1817,



Sometimes placed in monospecific genus Harpiprion. Monotypic.


Bolivia and SC & S Brazil to Paraguay, N Argentina and Uruguay.

Descriptive notes

71–76 cm. Unmistakable, due to very uniform coloration, bushy crest and white forehead.


Quite vocal. Main call is a loud rapid series of cackling notes "kah-kah-kah-kah-kah-kah-kah",... read more


Open country, occurring in pastures, grassland and savanna; also frequents rice fields, ponds,... read more

Food and feeding

Diet includes insects, snails and aquatic molluscs (Pomacea). Recorded eating a fish. Feeds almost always singly or in pairs... read more


Recorded in Aug–Sept in Pantanal, Brazil. Solitary. Nest is platform made with twigs, lined with grass and leaves; built on... read more


Not well known, but appears to be mainly sedentary. Some do wander since occasional birds appear... read more

Status and conservation

Not globally threatened (Least Concern). It has been suggested that the global population may be of the order of 50,000–100,000 birds.Generally uncommon and little... read more

Recommended citation

Matheu, E., del Hoyo, J., Bonan, A., Garcia, E.F.J. & Boesman, P. (2018). Plumbeous Ibis (Theristicus caerulescens). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 18 December 2018).