Current research

Fernandez-Duque started the project because he was interested in the evolution of social relationships, monogamous mating systems and parental care.  In particular he was interested in examining the roles that males and females have in the maintenance of a monogamous…


Fundación ECO

Fundación ECO (Ecosistemas del Chaco Oriental) is a conservation and education organization as well as the Argentinean umbrella under which the Owl Monkey Project operates. In 1996, my wife, Claudia Valeggia, and I established research projects in the Province of Formosa….


Estancia Guaycolec

Estancia Guaycolec, a privately-owned cattle ranch, is home to Proyecto Mirikiná (Owl Monkey Project). This 25,000 hectare ranch is located 25 km north of Formosa City. Along the banks of the Pilagá River (58◦11_ W, 25◦58_ S), the research group…

News from the field

Postdoctoral position with the OMP at Yale University

The Owl Monkey Project is searching for a post-doctoral associate who will collaborate in projects on socio-endocrinology and genetics. The Department of Anthropology and the School of Forestry & Environmental Studies at Yale University invite applications for a full-time, two-year position in…

Paternal care

Evolution of monogamy in Proceedings B – Owl monkeys don’t cheat

We’re proud to announce a new publication in Proceedings of the Royal Society B: Biological Sciences, which explores the evolution of monogamy in mammals with some exciting new data from the Owl Monkey Project in Argentina.

Leakey Foundation

Project students receive Leakey Awards

Owl Monkey Project researchers and PhD candidates at the University of Pennsylvania Margaret Corley and Andrea Spence-Aizenberg have both been awarded general grants from The Leakey Foundation.

Un sitio nuevo, en dos idiomas

En el Proyecto Mirikiná (the Owl Monkey Project), siempre estamos tratando de balancearnos entre dos idiomas. Para navegar nuestro menú, mueva el ratón :) encima de cada opción en inglés para acceder a la página equivalente en castellano. También pueden encontrar,…

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A new site, in two languages

Here at the Owl Monkey Project (Proyecto Mirikiná), we are always juggling languages.  In Argentina, we host U.S. students who come to learn the Spanish as well as the wildlife. Our Argentinian scholars learn to read and write articles in English (which…

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