| Protecting important sites for biodiversity contributes to meeting global conservation targets SHM Butchart, JPW Scharlemann, MI Evans, S Quader, S Arico, ... PloS one 7 (3), e32529, 2012 | 379 | 2012 |
| Assessment of Paraguay's forest cover change using Landsat observations C Huang, S Kim, K Song, JRG Townshend, P Davis, A Altstatt, O Rodas, ... Global and Planetary Change 67 (1-2), 1-12, 2009 | 218 | 2009 |
| Rapid loss of Paraguay's Atlantic forest and the status of protected areas—A Landsat assessment C Huang, S Kim, A Altstatt, JRG Townshend, P Davis, K Song, CJ Tucker, ... Remote sensing of Environment 106 (4), 460-466, 2007 | 199 | 2007 |
| A global threats overview for Numeniini populations: synthesising expert knowledge for a group of declining migratory birds JW Pearce-Higgins, DJ Brown, DJT Douglas, JA Alves, M Bellio, P Bocher, ... Bird Conservation International 27 (1), 6-34, 2017 | 144 | 2017 |
| Integrating spatially explicit habitat projections into extinction risk assessments: a reassessment of Amazonian avifauna incorporating projected deforestation JP Bird, GM Buchanan, AC Lees, RP Clay, PF Develey, I Yépez, ... Diversity and Distributions 18 (3), 273-281, 2012 | 92 | 2012 |
| Migratory connectivity of Semipalmated Sandpipers and implications for conservation S Brown, C Gratto-Trevor, R Porter, EL Weiser, D Mizrahi, R Bentzen, ... The Condor: Ornithological Applications 119 (2), 207-224, 2017 | 80 | 2017 |
| Biological surveys and conservation priorities in eastern Paraguay JC Lowen, L Bartrina, RP Clay, JA Tobias CSB, Conservation Publication, Cambridge, United Kingdom, UK, 1996 | 74 | 1996 |
| Distribution, abundance, and conservation of Vinaceous Amazons (Amazona vinacea) in Argentina and Paraguay K Cockle, G Capuzzi, A Bodrati, R Clay, H Del Castillo, M Velázquez, ... Journal of Field Ornithology 78 (1), 21-39, 2007 | 67 | 2007 |
| Guía para la identificación de las aves de Paraguay T Narosky, D Yzurieta, RP Clay Vázquez Mazzini Editores, 2006 | 67 | 2006 |
| Plumage Development and Molt in Long-Tailed Manakins (Chiroxiphia Linearis): Variation According to Sex and Age SM Doucet, DB McDonald, MS Foster, RP Clay The Auk 124 (1), 29-43, 2007 | 61 | 2007 |
| Análisis cualitativo para la definición de las ecorregiones del Paraguay occidental. MF Mereles, JL Cartes, P Cacciali, A Yanosky, RP Clay, C Paradeda, ... | 56 | 2013 |
| The importance of birds for conservation in the Neotropical region J García-Moreno, RP Clay, CA Ríos-Muñoz Journal of Ornithology 148 (Suppl 2), 321-326, 2007 | 44 | 2007 |
| A global assessment of the conservation status of the American Oystercatcher Haematopus palliatus RP Clay, AJ Lesterhuis, S Schulte, S Brown, D Reynolds, TR Simons International Wader Studies 20, 62-82, 2014 | 38 | 2014 |
| New and noteworthy observations on Paraguayan avifauna JC Lowen, RP Clay, JM Barnett, NA Madro o, M Pearman, BL Lanús, ... BULLETIN-BRITISH ORNITHOLOGISTS CLUB 117, 275-293, 1997 | 37 | 1997 |
| Lista comentada de las aves de Paraguay H Del Castillo, RP Clay, N Arguello Asociación Guyra Paraguay, 2004 | 31* | 2004 |
| Project YACUTINGA’95: bird surveys and conservation priorities in eastern Paraguay JC Lowen, L Bartrina, TM Brooks, RP Clay, J Tobias Cotinga 5, 14-19, 1996 | 31 | 1996 |
| Status of the avifauna of San Rafael National Park, one of the last large fragments of Atlantic Forest in Paraguay A Esquivel, SJ Peris, R Fraga, RP Clay, A Bodrati, H Del Castillo, ... Bird Conservation International 17 (4), 301-317, 2007 | 29 | 2007 |
| Atlas de las Aves de Paraguay H del Castillo, RP Clay, J De Egea Asociación Guyra Paraguay, 2005 | 28 | 2005 |
| White-winged Nightjars Caprimulgus candicans and cerrado conservation: the key findings of Project Aguará Ñu 1997 RP Clay, DR Capper, JM Barnett, IJ Burfield, EZ Esquivel, R Fariña, ... Cotinga 9, 52-56, 1998 | 28 | 1998 |
| Bird surveys and conservation in the Paraguayan Atlantic Forest TM Brooks, R Barnes, L Bartrina, SHM Butchart, RP Clay, EZ Esquivel, ... Cambridge: BirdLife International Study Report, 1993 | 26 | 1993 |
