Ph.D. in Ornithology

Alberto Esquivel Mattos

Alberto is a Paraguayan biologist considered to be one of the best ornithologists of Paraguay. His experience as ornithologists first started at the Asociación Guyra Paraguay (the Paraguayan partner of BirdLife International), in which he was involved in many projects that focus in faunal inventories and identification of important sites for birds throughout Paraguay. Through these journeys, Alberto has become one of the best to find cryptic and endangered bird species, with the ability to identify many of them by their vocalizations.

Alberto has also invested many years to study the birds of the Atlantic Forest, one of the most biodiverse and threatened ecorregions of the world. His studies have been subject of his Ph.D. dissertation “Bird communities of the Atlantic Forest of Paraguay” and his book “Aves de San Rafael” (Birds of San Rafael”).

Alberto is continually researching about birds of Atlantic Forest of Paraguay, and is constantly developing projects to help conserving the biodiversity of his country.

More about Alberto and his works


Scientific Papers

Esquivel M., A. & Peris, S. J. 2012. Estructura y organización de una comunidad de aves del Bosque Atlántico de San Rafael, Paraguay. Ornitología Neotropical 23: 569-584. Access to this article: ON 23(4) 569-584 Esquivel y Peris

Pople, R.G. & Esquivel, A. 2012. Response of White-winged Nightjars Eleothreptus candicans to a prescribed burn of cerrado grassland at Bosque Mbaracayú Biosphere Reserve, Paraguay. Conservation Evidence 9, 36-42. Access to this article 

Esquivel M., A. & Peris, S. J. 2011. Comunidades de aves del Bosque Atlántico del Paraguay. Ardeola 58 (2) 436 – 437.

Esquivel M., A. & Peris, S. J. 2008. Influence of time of day, duration and number of counts in point count sampling of birds in an Atlantic Forest of Paraguay. Ornitología Neotropical 19: 229-242Show summary. Access to this article

Esquivel, A., Velázquez, M. C., Bodrati, A., Fraga, R., del Castillo, H., Klavins, J., Clay, R. P., Madroño, A.  & Peris, S. J. 2007. Status of the avifauna of San Rafael National Park, one of the last large fragments of Atlantic Forest in Paraguay. Bird Conservation International 17: 301 -317. Show summary


Esquivel M., A. & Peris, S. J. 2011. Aves de San Rafael. Universidad de Salamanca / Asociación Pro Cosara. Asunción, Paraguay. 132 pp. Show summary


Roig, J. L. 2012. Las aves de nuestra tierra cantan con el Arpa Paraguaya. Arp: Jorge Luis Roig, Bird recordings: Alberto Esquivel M. Click here to download a song.