| Diagnosability versus mean differences of Sage Sparrow subspecies MA Patten, P Unitt The Auk 119 (1), 26-35, 2002 | 273 | 2002 |
| Empidonax traillii extimus: an endangered subspecies P Unitt Western Birds 18 (3), 137-162, 1987 | 193 | 1987 |
| The birds of San Diego county P Unitt San Diego Society of Natural History, 1984 | 180 | 1984 |
| San Diego county bird atlas P Unitt, AE Klovstad San Diego Natural History Museum, 2004 | 179 | 2004 |
| Skin from feet of museum specimens as a non-destructive source of DNA for avian genotyping NI Mundy, P Unitt, DS Woodruff The Auk 114 (1), 126-129, 1997 | 156 | 1997 |
| Birds of the Salton Sea: status, biogeography, and ecology M Patten, G McCaskie, P Unitt Univ of California Press, 2003 | 109 | 2003 |
| Downscaling of species distribution models: a hierarchical approach P Keil, J Belmaker, AM Wilson, P Unitt, W Jetz Methods in Ecology and Evolution 4 (1), 82-94, 2013 | 106 | 2013 |
| A genus-level classification of the family Thraupidae (Class Aves: Order Passeriformes) KJ Burns, P Unitt, NA Mason Zootaxa 4088 (3), 329-354, 2016 | 56 | 2016 |
| Rapid phenotypic change in a native bird population following conversion of the Colorado Desert to agriculture NA Mason, P Unitt Journal of Avian Biology 49 (2), jav-01507, 2018 | 18 | 2018 |
| Winter distribution of Willow Flycatcher subspecies EH Paxton, P Unitt, MK Sogge, M Whitfield, P Keim The Condor 113 (3), 608-618, 2011 | 17 | 2011 |
| Update on the birds of Isla Guadalupe, Baja California L Quintana-Barrios, G Ruiz-Campos, P Unitt, RA Erickson Western Birds 37 (1), 23-36, 2006 | 17 | 2006 |
| Noteworthy records of birds in northwestern Baja California, Mexico P Unitt, AM Rea, E Palacios, E Mellink, L Alfaro, S González Western Birds 26 (3), 144-154, 1995 | 17 | 1995 |
| Poor reproductive success of Gray Vireos in a declining California population L Hargrove, P Unitt Journal of Field Ornithology 88 (1), 16-29, 2017 | 13 | 2017 |
| Taxonomy of the Marsh Wren in southern California P Unitt, KS Messer, M Théry San Diego Society of Natural History, 1996 | 10 | 1996 |
| First record of Newell’s Shearwater from the mainland of North America P Unitt, MA Faulkner, C Swanson Western Birds 40 (1), 2009 | 7 | 2009 |
| Taxonomy of the brown creeper in California P Unitt, AM Rea RW Dickerman (compiler), The Era of Allan R. Phillips: a Festschrift …, 1997 | 7 | 1997 |
| Population changes and biogeographic affinities of the birds of the Salton Sink, California/Baja California MA Patten, RA Erickson, P Unitt Studies in Avian Biology 27, 24-32, 2004 | 6 | 2004 |
| Some bird observations from Baja California Sur P Unitt Monogr. Field Ornithol 3, 107-111, 2001 | 6 | 2001 |
| Agriculture induces isotopic shifts and niche contraction in Horned Larks (Eremophila alpestris) of the Colorado Desert NA Mason, P Unitt, JP Sparks Journal of Ornithology 162 (2), 381-393, 2021 | 5 | 2021 |
| First specimen of the Northern Saw-whet Owl from Baja California, Mexico, with data on its abundance in the Sierra San Pedro Martir. T GAONA-MELO, G DE LEÓN-GIRÓN, G RUIZ-CAMPOS, ... Western Birds 52 (2), 2021 | 4 | 2021 |
