• 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.

Casqued Oropendola - BirdForum Opus

Photo © by Thibaud
Parque Nacional Yanachaga Chemillen, Pasco, Peru, Peru, August 2020

Alternative name: Casqued Cacique

Cacicus oseryi

Psarocolius oseryi


Male: 37 cm (15 in); Female: 29 cm (11 in)

  • Chestnut overall plumage
  • Greyish-olive throat
  • Yellowish-olive upper breast
  • Chestnut upperwing


South America: found in tropical eastern Ecuador, eastern Peru and extreme south-western Brazil (Amazonas).


This is a monotypic species[1].
Formerly placed in genus Clypicterus or Psarocolius.


Mature floodplain forest, although they will occasionally follow other oropendolas into more open habitats.


They are often seen in groups of 3-4.


They nest colonially in trees; the nest, constructed by the female, is a suspended, long woven basket. She is also responsible for incubating the eggs, while the male defends it from predators, such as monkeys and toucans.


Their diet is not too well recorded. Probably consists mostly of arthropods, small vertebrates, nectar and fruit.


  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2019. The eBird/Clements Checklist of Birds of the World: v2019. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Gill, F and D Donsker (Eds). 2014. IOC World Bird Names (version 4.3). Available at http://www.worldbirdnames.org/.
  3. Fraga, R. (2020). Casqued Cacique (Cacicus oseryi), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.casoro2.01

Recommended Citation

External Links