| Galápagos birds and diseases: invasive pathogens as threats for island species M Wikelski, J Foufopoulos, H Vargas, H Snell Ecology and Society 9 (1), 2004 | 316 | 2004 |
| Assessing the risks of introduced chickens and their pathogens to native birds in the Galápagos Archipelago NL Gottdenker, T Walsh, H Vargas, J Merkel, GU Jiménez, RE Miller, ... Biological Conservation 126 (3), 429-439, 2005 | 107 | 2005 |
| HEMATOLOGY, PLASMA CHEMISTRY, AND SEROLOGY OF THE FLIGHTLESS CORMORANT (PHALACROCORAX HARRISI) IN THE GALÁPAGOS ISLANDS … EK Travis, FH Vargas, J Merkel, N Gottdenker, RE Miller, PG Parker Journal of Wildlife Diseases 42 (1), 133-141, 2006 | 66 | 2006 |
| Population size and trends of the Galápagos Penguin Spheniscus mendiculus H Vargas, C Lougheed, H Snell Ibis 147 (2), 367-374, 2005 | 59 | 2005 |
| MICROFILARIAE IN GALÁPAGOS PENGUINS (SPHENISCUS MENDICULUS) AND FLIGHTLESS CORMORANTS (PHALACROCORAX HARRISI): GENETICS … J Merkel, HI Jones, NK Whiteman, N Gottdenker, H Vargas, EK Travis, ... Journal of Parasitology 93 (3), 495-503, 2007 | 56 | 2007 |
| On the verge of extinction: a survey of the mangrove finch Cactospiza heliobates and its habitat on the Galápagos Islands M Dvorak, H Vargas, B Fessl, S Tebbich Oryx 38 (2), 171-179, 2004 | 55 | 2004 |
| Frequency and effect of pox-like lesions in Galapagos mockingbirds. H Vargas Journal of Field Ornithology 58 (2), 101-102, 1987 | 55 | 1987 |
| Population size and trends of the Waved Albatross Phoebastria irrorata DJ Anderson, KP Huyvaert, V Apanius, H Townsend, CL Gillikin, LD Hill, ... Marine Ornithology 30, 63-69, 2002 | 32 | 2002 |
| Threats and vision for the conservation of Galápagos birds G Jiménez-Uzcátegui, D Wiedenfeld, CA Valle, H Vargas, P Piedrahita, ... The Open Ornithology Journal 12 (1), 2019 | 23 | 2019 |
| Living laboratory in peril PD Boersma, H Vargas, G Merlen Science 308 (5724), 925-925, 2005 | 23 | 2005 |
| An assessment of a Galapagos Rail population over thirteen years (1986 to 2000) JP Gibbs, WG Shriver, H Vargas Journal of field ornithology 74 (2), 136-140, 2003 | 18 | 2003 |
| ¿ Por qué tan pocas Opuntia en la Isla Española-Galápagos? C Márquez, H Vargas, H Snell, A Mauchamp, J Gibbs, W Tapia Ecología Aplicada 2 (1), 21-29, 2003 | 18 | 2003 |
| Feral rock doves in the Galápagos Islands: Biological and economic threats R Brand Phillips, HL Snell, H Vargas | 16 | 2003 |
| Current status, analysis of census methodology, and conservation of the Galápagos Penguin, Spheniscus mendiculus KL Mills, H Vargas | 14 | 1997 |
| Food Habits, Breeding Biology, and Status of the Gray-Backed Hawk (Leucopternis Occidentalis) in Western Ecuador H Vargas | 14 | 1995 |
| What is happening with the avifauna of San Cristóbal? H Vargas | 11 | 1996 |
| Saving the symbol of the Andes: a range wide conservation priority setting exercise for the Andean condor (Vultur gryphus) RB Wallace Wildlife Conservation Society, 2020 | 10 | 2020 |
| Galápagos mangrove finch camarhynchus heliobates recovery plan 2010–2015 B Fessl, H Vargas, V Carrion, R Young, S Deem, J Rodriguez-Matamoros, ... Darwin Initiat, 1-109, 2010 | 10 | 2010 |
| Past and present ornithology in Galápagos H Vargas, R Bensted-Smith Proceedings of the Symposium Science and Conservation in Galápagos Royal …, 2000 | 10 | 2000 |
| The arrival of Marek’s disease to Galápagos H Vargas, HL Snell Noticias de Galápagos 58 (58), 4-5, 1997 | 10 | 1997 |
