| Effects of habitat fragmentation on avian nesting success: a review of the evidence at multiple spatial scales SE Stephens, DN Koons, JJ Rotella, DW Willey Biological conservation 115 (1), 101-110, 2004 | 451 | 2004 |
| First-year movements by juvenile Mexican spotted owls in the canyonlands of Utah DW Willey, C Van Riper Journal of Raptor Research 34 (1), 1, 2000 | 74* | 2000 |
| Lesser Scaup Population Dynamics: What Can Be Learned from Available Data? Dynamique des populations de Petit Fuligule: que peut-on apprendre des données disponibles? DN Koons, JJ Rotella, DW Willey, M Taper, RG Clark, S Slattery, ... Avian Conservation and Ecology-Écologie et conservation des oiseaux 1 (3), 6, 2006 | 62 | 2006 |
| Effectiveness of wildlife guards at access roads TDH Allen, MP Huijser, DW Willey Wildlife Society Bulletin 37 (2), 402-408, 2013 | 41 | 2013 |
| Movements and habitat utilization by Mexican spotted owls within the canyonlands of Utah DW Willey Jr Northern Arizona University, 1998 | 32 | 1998 |
| Diet of Mexican Spotted Owls in Utah and Arizona DW Willey The Wilson Journal of Ornithology 125 (4), 775-781, 2013 | 22 | 2013 |
| Breeding Season Home Range and Habitat Use of Mexican Spotted Owls (Strix occidentalis lucida) Below the South Rim of Grand Canyon National Park TS Bowden, JM Ferguson, RV Ward, ML Taper, DW Willey The Wilson Journal of Ornithology 127 (4), 678-689, 2015 | 20 | 2015 |
| Home range characteristics of Mexican spotted owls in the Rincon Mountains, Arizona DW Willey, C Van Riper III The Wilson Journal of Ornithology 126 (1), 53-59, 2014 | 18 | 2014 |
| Home-range characteristics and juvenile dispersal ecology of Mexican Spotted Owls in southern Utah DW Willey Unpublished Report. Utah Divison of Wildlife Resources, Salt Lake City, 1993 | 12 | 1993 |
| Roost Habitat of Mexican Spotted Owls (Strix occidentalis lucida) in the Canyonlands of Utah DW Willey, C Van Riper III The Wilson Journal of Ornithology 127 (4), 690-696, 2015 | 11 | 2015 |
| Status and ecology of Mexican spotted owls in the Upper Gila Mountains recovery unit, Arizona and New Mexico JL Ganey, P James Jr, DW Willey Gen. Tech. Rep. RMRS-GTR-256WWW. Fort Collins, CO: US Department of …, 2011 | 10 | 2011 |
| Ecology of small mammals within spotted owl nest areas in Grand Staircase-Escalante National Monument DW Willey, HC Willey Learning from the land: Grand Staircase-Escalante National Monument Science …, 2010 | 9 | 2010 |
| Characteristics of nesting areas used by San Clemente Island sage sparrows DW Willey The Condor 99 (1), 217-219, 1997 | 9 | 1997 |
| Predicting occurrence of Mexican Spotted Owls in arid canyonlands of southern Utah DW Willey, M Zambon Journal of Raptor Research 48 (2), 118-127, 2014 | 7 | 2014 |
| Mexican Spotted Owls in canyonlands of the Colorado plateau DW Willey | 7 | 1995 |
| Mexican spotted owl distribution and habitat within Grand Canyon National Park DW Willey, RV Ward Protecting our diverse heritage: the role of parks, protected areas, and …, 2004 | 6 | 2004 |
| Nesting success of San Clemente sage sparrows DW Willey The Southwestern Naturalist, 28-31, 1990 | 6 | 1990 |
| Influence of fire on Mexican Spotted Owls (Strix occidentalis lucida) in Saguaro National Park DW Willey | 2 | 1998 |
| Effects of livestock grazing on grassland birds in Capitol Reef National Park DW Willey US Department of the Interior, National Park Service, 1994 | 2 | 1994 |
| Evaluation of wildlife Guards at Access Roads TDH Allen, MP Huijser, DW Willey Intermountain Journal of Sciences 17 (1-4 December), 38-38, 2011 | 1 | 2011 |
