About the Author(s)

Tomás Rivas-Fuenzalida is a Chilean raptor specialist and current president of Fundación Ñankulafkén. He has been working in forest-raptor biology, ecology, and conservation since 2006, in different ecosystems and countries, including Chile, Argentina, Peru, and Ecuador. The main species he has studied are Rufous-tailed Hawk (Buteo ventralis), White-throated Hawk (Buteo albigula), Black-and-chestnut Eagle , Chilean Hawk (Accipiter chilensis), Black Hawk-Eagle (Spizaetus tyrannus), Black-and-white Hawk-Eagle (Spizaetus melanoleucus), and Orange-breasted Falcon (Falco deiroleucus). He is co-author of the book "Las Aves Rapaces de Chile, 2019" (The Birds of Prey of Chile) and has published more than thirty scientific papers on the distribution, biology, and ecology of Neotropical raptors. He is a member of the Neotropical Ornithological Society and the Neotropical Raptor Network.

Juan Manuel Grande is an Argentinean resercher, working at the Colaboratorio de Biodiversidad, Ecología y Conservación (ColBEC) in the Facultad de Ciencias Exactas y Naturales de la Universidad de La Pampa and the Instituto de Ciencias Ambientales y de la Tierra de La Pampa dependent of the CONICET. He has also served as Director at Large on the Board of the Raptor Research Foundation. He has done extensive research, mostly focused on different aspects of birds-of-prey ecology and conservation in Spain and Argentina, about which he has produced more than 50 publications and book chapters. He is currently leading a research initiative on Black-and-chestnut Eagle in Argentina to try to fill the knowledge gaps on this species in the country. He is also involved in several research projects aimed at analyzing the effects of human activities and, in particular, agricultural intensification, on the health and demography of raptors.

Sebastián Kohn is an Ecuadorian conservation biologist, executive director, and researcher at Fundación Cóndor Andino, Ecuador. He has studied and worked with the Andean Condor (Vultur gryphus), Black-and-chestnut Eagle, and spectacled bears (Tremarctos ornatus) as well as working in the creation, research, and conservation of the Rio Manduriacu Reserve in the Toisán mountain range of northwestern Ecuador, where he is a founder of the Ilitío Wildlife Rescue Center. He is a founding member of the Andean Condor Work Group of Ecuador and a member of the IUCN Vulture Specialist Group. He has developed over 20 publications on several aspects of raptor ecology and conservation as well as herpetological research with several new species described (Nymphargus manduriacu, Noblella worleyae) or rediscovered (Rhaebo olallai, Emmochliofis fugleri) after several decades.

Félix Hernán Vargas is a conservation biologist and ornithologist from Ecuador. Hernan completed a Master’s degree in Raptor Biology at Boise State University (USA) and a PhD (DPhil) at the University of Oxford (UK) after studying the effects of climate variation on the ecology of small populations of birds in the Galapagos Islands. Working as Resident Ornithologist (1995-2001) of the Charles Darwin Foundation in the Galapagos Islands, he designed and developed population monitoring protocols for the Galapagos Penguin (Spheniscus mendiculus), Flightless Cormorant (Nannopterum harrisi), Black-and-chestnut Eagle, American Flamingo (Phoenicopterus ruber), and Mangrove Finch (Camarhynchus heliobates). Since 2006, he has worked as a senior researcher of The Peregrine Fund (USA) and contributed to Actions Plans for the Conservation of the Andean Condor in Ecuador, Peru, and Bolivia, as well as the Harpy Eagle (Harpia harpyja) in Panama. Working for The Peregrine Fund, in partnership with universities and other organizations in Latin America, he directs the Neotropical Science and Student Education Program and has supervised more than 40 BSc, Masters in Science, and PhD students conducting thesis research on several raptor species. His objective is to integrate conservation education, sound scientific research, capacity building, and income generation through community-based organizations (CBOs) to achieve conservation of Neotropical ecosystems. Hernan, with collaborators, has published more than 100 papers in refereed international journals and book chapters covering research topics on from novel parasites and diseases, and finches, flamingos, to Andean Condors and Harpy Eagles and more later on human-raptor conflicts.

Santiago Zuluaga is a Colombian biologist, founding director of the Fundación Proyecto Águila Crestada - Colombia (PAC-Colombia). PAC-Colombia is a non-governmental organization founded in 2015 in Colombia to save the Black-and-chestnut Eagle mainly in the northern part of its distribution. Santiago is finishing a PhD in Biology (at the Universidad Nacional del Comahue, Argentina) with the support of Colaboratorio de Biodiversidad, Ecología y Conservación (ColBEC) dependent of the CONICET of Argentina. In 2017, as part of of his PhD about the Black-and-chestnut Eagle in socio-ecological systems of South America, he founded the Black-and-chestnut Eagle Project South America together with researchers in Colombia, Ecuador, Peru, and Argentina to advance in the knowledge and conservation of the species on a larger scale. Santiago has published dozens of papers in refereed international journals and ten book chapters, most related to raptor species conservation like the Black-and-chestnut Eagle, Harpy Eagle, and Andean Condor. He has also been a member of the Red List Authority for Birds of Birdlife International and the Survival Species Commission of IUCN for a decade (from 2012).