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Cocoi Heron - BirdForum Opus

Photo by Graham Osborne
Aripo Agricultural Research Station, Trinidad, May 2004
Ardea cocoi


95–127 cm (37½-50 in)

  • Grey upperparts
  • Black underparts
  • White neck
  • Black crown
  • Long legs


Very widespread in lowlands of South America: breeds from eastern Panama, Colombia and Venezuela south to about 50° S in Chile and Argentina, rarely south to Straits of Magellan. Resident but southern birds may move north in winter.

Photo by Stanley Jones
Poconê, Mato Grosso, Brazil, August 2015

Has also occurred as a vagrant on the Falkland Islands and Gough Island.


This is a monotypic species[1].


Found around lakes, in swamps and along rivers and near forests sometimes estuaries. Observed at heights around 260m.



The diet consists mostly of fish, frogs and aquatic insects.


They nest in colonies and alone. The nest is built in trees and bushes. The 3 light blue, white spotted eggs are incubated for 24-26 days.


  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2015. The eBird/Clements checklist of birds of the world: v2015, with updates to August 2015. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Handbook of the Birds of the World Alive (retrieved January 2016)
  3. damisela.com
  4. BF Member observations

Recommended Citation

External Links

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