• Welcome to BirdForum, the internet's largest birding community with thousands of members from all over the world. The forums are dedicated to wild birds, birding, binoculars and equipment and all that goes with it.

    Please register for an account to take part in the discussions in the forum, post your pictures in the gallery and more.
ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Buff-necked Ibis - BirdForum Opus

Photo © by obasanmi
Pantanal, Brazil, 15 June 2006

Alternative name: (In Spanish (Brazilian) Curicaca)

Theristicus caudatus


71–76 cm (28-30 in)

  • Grey above
  • Black below
  • Buff head, neck, and chest
  • Rusty crown and lower chest
  • Black face
  • White wings
  • Long decurved black bill
  • Red legs

Sexes similar

Photo © by Stanley Jones
Salta Province, Argentina, 10 October, 2019


South America: found in Colombia, Venezuela, Guyana, Suriname, Bolivia, Brazil, Paraguay, Uruguay, Chile and Argentina



There are 2 subspecies[1]:

  • T. c. caudatus:
  • T. c. hyperorius:


Wetland scrub, savanna, woodlands, lakes, marshes, and open forests.



The diet consists mostly of insects as well as spiders and centipedes; also some small mammals, invertebrates, snails, frogs and reptiles.


A platform nest is made from twigs and branches. The clutch consists of 2-4 eggs.


  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, T. A. Fredericks, J. A. Gerbracht, D. Lepage, S. M. Billerman, B. L. Sullivan, and C. L. Wood. 2022. The eBird/Clements checklist of Birds of the World: v2022. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/
  2. Avibase
  3. Matheu, E., del Hoyo, J., Garcia, E.F.J. & Boesman, P. (2020). Buff-necked Ibis (Theristicus caudatus). 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 https://www.hbw.com/node/52768 on 1 April 2020)
  4. Arthur Grosset

Recommended Citation

External Links

GSearch checked for 2020 platform.1