Meet our Sponsors, Friends, and Collaborators !

(this page is a ‘living document’ -- help us keeping it evolving!)


Keith L. Bildstein


Keith is Sarkis Acopian Director of Conservation Science at Hawk Mountain Sanctuary in Orwigsburg, Pennsylvania, where he oversees Hawk Mountain's conservation science program, and coordinates the activities of the Sanctuary's graduate students, international interns, and visiting scientists.


Keith endorsed Raptors of South America right from the beginning, and provides insights on many matters at virtually all stages of the project.  He currently oversees the project and coordinates fundraising for Raptors of South America.

Learn more about Keith and his work...




William S. Clark


Bill is a world authority in raptor identification.  He has observed and photographed raptors around the world for the last 35+ years!  Bill coauthored the outstanding ‘Hawks of North America’ and ‘A Photographic Guide to North America’, he also authored ‘Raptors of Europe, The Middle East, and North Africa’ and many articles on raptor identification.  Bill also taught Sergio Seipke how to study raptor plumages both in the field and from museum specimens.  Bill helped Sergio establishing a productive relationship with Princeton University Press.  He co-lead the first Raptors of South America Raptor Trip with Sergio, and encouraged his friends to sign up for later Raptor Trips and to support the project.




Jean-Marc Thiollay

A world authority in tropical raptor biology.  He studied raptors as a professional ornithologist in many countries including Gabon, Uganda, India, Indonesia, Vietnam, Mexico, Colombia, and especially French Guiana.  He is a good friend and supporter of Raptors of South America.  A tireless companion always willing to help in raptor field surveys.  He currently lives with his wife Françoise in Rouilly-Sacey, France.  J-M and Françoise have travelled extensively to extend one of the highest life lists of the birds of the world.  Here is Jean-Marc holding a roadkill Roadside Hawk in northern Argentina.



Monica Evans


Monica has been a friend and supporter of Raptors of South America since 2006 when she joined us on her first, of 7, Raptor Trip to South America.  Monica is a keen ‘spotter’ and a tireless traveler always willing to aid in field work.  Monica enjoys ‘digiscoping’ raptors and watching other birds too.  Monica joined us on four Raptor Trips to South America.  Monica lives with her three kittens in Kalamazoo, USA.  Here is Monica walking through the lowland wet forests of southeastern Venezuela conducting a ‘Forest-Falcon’ search!




Laurence Resseguie


Laurie has been a friend and supporter of Raptors of South America since 2007 when he joined us on his first Raptor Trip to Venezuela.  Laurie is interested in raptor biology, raptor identification and in experiencing cultures in Latin America.  He also likes jays.  Laurie joined us on 7 Raptor Trips in South America.  He currently lives with his wife Lilly in Vancouver (WA), USA.  Here is Laurie helping on a raptor road-survey in El Leoncito National Park, San Juan, western Argentina.





Pieter Vermeer

Senior economist at the Ministry of Transport, Public Works and Water-management in The Hague, Pieter has been a friend and supporter of Raptors of South America since 2008 when he joined us on his first, of 5, Raptor Trips in South America.  “I don't just like raptors, but I have a real passion for raptors!”.  He travels around the world to watch raptors and has recently seen his 200th species in northern Argentina (Mountain Caracara). Wild cats, nice (German) cars, and Ajax Amsterdam (!) are also a matter of passion for Pieter.  He also has an interest for bird books and he is happy to support Raptors of South America!



Ben Olewine IV


Ben (right) is a former member of the Board of Directors at Hawk Mountain Sanctuary and an active conservationist.  Ben kindly  donated money to acquire a state-of-the-art photographic camera and lens for the project.  His contribution has been enormous since photographs are a key element of Raptors of South America.









Elaine Radford


Elaine joined the family of friends & supporters of Raptors of South America in 2009 when she took her first, of 2, Raptor Trips to South America.  Elaine is an enthusiastic hawkwatcher, but also enjoys other birds and butterflies!  Elaine lives with her husband Roger in New Orleans, USA.  Here is Elaine in the Cloud Forests (“Elfin Forest”) of Siberia, Bolivia.










Donald Bryant


Don became a friend of Raptors of South America in 2012, when we met him in South Africa!  His first Raptor Trip to South America took place in January 2013, when Don joined us on the Northern Argentina Raptor Trip.  Don has a strong interest in raptors and raptor photography.  He teaches Biochemistry and Molecular Biology at Penn State, USA.  Here’s Don at 4,170 m a.s.l. being snowed on in the Puna, one of the driest environs of Northern Argentina!








Organizations and other individuals to whom we are grateful !


. Hawk Mountain Sanctuary.  The Conservation Sponsor of Raptors of South America contributes to the project in many ways including -but not limited to- logistic and financial support, Dr. Keith Bildstein’s and Dr. Laurie Goodrich’s time, library resources, relationship building, and resource administration.

. Birder’s Exchange.  Donated a telescope, a tripod, and pair of binoculars.

. The Peregrine Fund.  Provides Sergio Seipke with logistic and financial support.

. The Neotropical Bird Club.  Provided financial support.

. Instituto de Proteçao da Mata Atlántica.  Logistic support and information on raptors in NE Brazil.

. Usina Serra Grande.  Logistic support.

. Usina Caeté.  Logistic support.


. Ciro Albano.  Photos, and information on birds of NE Brazil.

. Jorge Albuquerque.  Logistic support, photos of raptors and stimulating discussions.

. Angel Andy.  Help in the field.

. Ignacio “Nacho” Areta.  A good friend of Raptors of South America always willing to share his nourished ornithological library, his photos and offering stimulating discussions.  Along with Kini Roesler, Nacho coordinates the ‘sound library’, a sub-project of Raptors of South America aimed at creating a complete collection of raptor calls in the continent.

. Rodrigo Araoz.  Photos of raptors and stimulating questions.

. David Ascanio.  Photos, and information on birds of Venezuela.

. Nick Athanas.  Information on birds of Ecuador.

. Clodoaldo Jose Bakker Faria.  Logistic support.

. Carlos Barrionuevo.  Photos of raptors and stimulating questions.

. John Bates.  Access to bird collection at the Field Museum of Natural History.

. Erico Baukat.  Information on birds of Brazil.

. Igor Berkunsky.  Logistic support, and photos of raptors.

. Marcelo Betinelli.  Photos of raptors.

. Ana and Oscar Bernardes.  Oscar and his wife Ana provide logistic support in Brazil, and help with fundraising.

. María Susana Bó.  PLogistic support, help in the field and info on birds of Argentina.

. Cris Caballero.  Logistic support (lots!).

. Gustavo Sebastian Cabanne.  Logistic support, field work, countless photos and field ID discussions, and plenty of information on birds of NE Argentina and S Brazil.

. Cristobal Doiny-Cabre.  Logistic support.

. Marcos Canuto.  Raptor photos.

. Igor Camacho.  Photos of raptors.

. Andres Capdeville.  Photos of raptors and information on birds of Central Argentina.

. Patricia Capllonch.  Logistic support, photos of raptors, and stimulating questions.

. Ramon Casares.  Photos of raptors.

. Gustavo Castillo.  Photos of raptors.

. Marcelo Cavicchia.  Photos of raptors.

. Joaquin Cereghetti.  Logistic support.

. Aldo Chiappe.  Photos of raptos and stimulating discussions.

. Oswaldo Cortes.  Photos of raptors.

. Mariano Costa.  Photos and information on birds of Patagonia.

. Carlos Darrieu.  Access to the bird collection of the Museo de Ciencias Naturales de La Plata.

. Andre De Luca.  Photos of raptors.

. Facundo Di Sallo.  Help with museum work.

. Francisco “Chico” Denes.  Logistic support, help with field work, and stimulating discussions.

. Christian Dietzen.  Photos of raptors.

. Mariano Diez Peña.  Photos of raptors.

. Adrian DiGiacomo.  Photos of raptors.

. Ricardo Doumecq Milieu.  Photos of raptors.

. Alberto Espinoza.  Photos of raptors.

. Facundo Gandoy.  Help with museum work.

. Gabriela Gasparri.  Photos of raptors.

. Florencia Grandi.  Information on logistics in Patagonia.

. Dean Greve.  Logistic support.

. Pablo Grilli.  Photos of raptors and great jokes!

. Roberto Guller.  Photos of raptors and stimulating questions.

. Valdir Hobus.  Information on birds of Brazil.

. Pablo Hualinga. Help in the field.

. Lorenzo Demetrio Jara.  Photos of raptors and information on birds of Chile.

. Alvaro Jaramillo.  Photos of raptors and stimulating discussions.

. Matias Juhant.  A good friend of Raptors of South America, always willing to share his knowledge about raptor ID, help with field, museum, or office work.  Matias also contributes raptor photographs and many stimulating discussions.

. Nancy Keeler.  Logistic support and assistance with fundraising.

. Maryn Keneflick.  Raptor photos and stimulating questions.

. Lloyd Kiff.  Access to literature and publicity of the RSA website.

. John Kvarnbäck.  Photos and information on birds of Venezuela.

. Flavia Lagiglia.  Access and assistance at the bird collection of the Museo Historia Natural de San Rafael.

. James Lowen.  Photos of raptors, and lots of patience!

. Mary Linkevich.  Helped with public relationships and fundraising.

. Joe Mallory.  Chair of the Board of Directors of Hawk Mountain Joe helped developing relationships with potential donors and facilitators, and provided insights at early stages of the project.

. Horacio Matarasso.  Information on birds of NW Patagonia in Argentina.

. Martina McNamara.  Photos of raptors.

. Juan Mazar Barnett.  Photos of raptors, and information on birds in Brazil and Argentina.

. Leandro Melgar.  Logistic support.

. Ramon Moller Jensen.  Lots and lots of great photos and stimulating questions.

. Ricardo Moller Jensen.  Photos of raptors.

. Ruth Lopez-Muñiz. Logistic support, photos, and information on birds of Ecuador.

. Leonardo Muñoz.  Logistic support, field work, photos and information on birds of western Argentina.

. Adrian Naveda.  Logistic support, photos and information on birds of Venezuela.

. Juliana Notarnicola.  Sergio Seipke’s wife.  Juliana helps in many ways including museum, field work, and moral support!

. Valeria Ojeda.  Information on birds of Patagonia and photos of raptors.

. Liliana Olveira.  Logistic support, photos of raptors and stimulating questions.

. Steve Oresman.  Steve helped developing relationships with potential donors and facilitators, and provided insights at early stages of the project.

. Diego Ortiz.  Photos of raptors.

. João Quental.  Photos of raptors.

. Luis Pagano.  Help with museum work, photos of raptors, information on birds in Argentina, and stimulating discussions.

. Mark Pearman.  Information on birds of Venezuela, Colombia, Ecuador and Argentina, and many stimulating discussions.

. Glauco Pereira.  Information on birds in NE Brazil and photos.

. Roberto Pereyra-Lobos.  Logistic support, field work, photos and information on birds of western Argentina.

. Elba Pescetti.  Access to the bird collection at CRICyT in Mendoza.

. Fernando Pinto.  Logistic support and information on birds in NE Brazil.

. Hernan Povedano.  Photos of raptors, and lent photo gear.

. Gertrudis Raffalli.  Photos of raptors.

. Fabio Raposo.  Help with field work, photos, library resources, and stimulating discussions.

. Robin Restall.  Access to the Phelps Ornithological Collection and photos of raptors.

. Nate Rice.  Access to bird collection at Academy of Natural Sciences of Philadelphia.

. Marco Antonio Rêgo.  Help at the Museu de Zoologia da Universidad de Sao Paulo.

. Sônia Roda.  Information on birds in NE Brazil.

. Maria Sol Rodriguez.  Aided in the field.

. Ignacio Roesler.  Field work, photos, and many interesting ID discussions.

. Luiz Salvador.  Video and information on birds in Brazil.

. Cesar Sanchez.  Field work, and photos.

. Jose Hernan Sarasola.  Logistic support and information on raptors in Central Argentina.

. Jose Segovia.  Photos of raptors.

. Peggy Shrum.  Photos of raptors and information on birds in Peru.

. Luis Fabio Silveira.  Logistic support, and permission to study the colletion of birds at Museu de Zoologia da Universidad de Sao Paulo.

. Alejandro Solano.  Logistic support, field work, photos and information on birds of Ecuador.

. Maria Lujan Soto.  Logistic support and information on birds of Buenos Aires.

. Jorge Spinuzza.  Photos of raptors.

. Fernando Straube.  Information on birds of Brazil.

. Lorenzo Sympson.  Logistic support, photos and information on bird of Patagonia.

. Paul Sweet.  Access to the bird collection of the American Museum of Natural History.

. Ildiko Szabo.  Field work, and photos of Bill Clark (see above)!

. Russell Thorstrom.  Help with field work, many useful comments and stimulating discussions and photos of raptors.

. Ruth Tingay.  RSA website publicity.

. Diego Soler Tovar.  Photos of raptors and stimulating questions.

. Ana Trejo.  Photos of raptors and information on birds of patagonia.

. Jose Vargas.  Logistic support, photos of raptors and information on birds of Venezuela.

. Felix Vidoz.  Logistic support and information on birds of Patagonia.

. Patricio Wallace. Logistic support and information on birds of Patagonia.

. Dave Willard.  Help at the bird collection of the Field Museum of Natural History, and for Friday evening’s happy hours!

. Jim Zook.  Photos of raptors.



Memory is fragile and pieces of paper are prone to getting lost -- If you think your name or organization should be listed here and it is not, please email Sergio Seipke to let him know.  We appreciate your help!


If you would like to become a Sponsor of Raptors of South America please click the green “support the project” button to the left.