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SIERRA NEVADA BIRD OBSERVATORY
SNBO banner photo
IBP’s Sierra Nevada Bird Observatory is an array of research, monitoring, and conservation initiatives aimed at strengthening bird conservation in the Sierra Nevada Mountains of California. We use cutting-edge science, long-term population monitoring, short-term surveys, and thoughtful conservation planning - often in close partnership with federal, state, and private land managers - to develop practical solutions to conservation and land management challenges. Our end goal is to help land managers safeguard at-risk bird species, ensure continued robust populations of common species, and promote good stewardship of the natural resources that birds require throughout the Sierra Nevada region.

Climate Change Photo Photo
The changing climate has already affected Sierra bird populations in numerous ways, and changes are expected to accelerate in the coming years. IBP has an active research program to understand climate-induced ecological changes in the Sierra Nevada, identify bird species most at risk, and develop strategies to bolster ecological resilience.
Black Backed Woodpecker Photo
IBP is working with the U.S. Forest Service to monitor Black-backed Woodpecker populations, conduct research to better understand the species’ habitat needs, and provide science-based input into managing recently burned forests so that Black-backed Woodpecker and other fire-associated species can thrive.
Birds of Prey Photo
IBP scientists collaborate with federal, state, and private land managers to study and conserve Sierra Nevada populations of birds of prey, including Spotted Owl, Great Gray Owl, and Northern Goshawk. Our work advances the understanding of the ecology, conservation status, and habitat needs of these species, particularly in relation to forest management, climate change, and the effects of fire.
Willow Flycatcher Photo
Willow Flycatcher numbers in the Sierra Nevada have declined greatly in the past century, and are still declining. IBP has an active program of research and conservation work aimed at safeguarding and restoring populations of this California Endangered Species.
Montane Meadows Photo
Montane meadows provide important habitat for many bird species in the Sierra Nevada, including several imperiled species. IBP works with land managers to assess meadow restoration needs, prescribe bird-friendly restoration approaches, and monitor the effects of restoration efforts on bird populations.
Sierra Nevada National Park Photo
Using annual backcountry point counts, IBP is partnering with the National Park Service to track changes in avian abundance and distribution at Yosemite and Sequoia/Kings Canyon National Parks, and Devils Postpile National Monument.
Monitoring Vehicular Recreation Areas Photo
IBP is partnering with California State Parks and the National Audubon Society to monitor bird populations in the state's vehicular recreation parks. Managers of these parks are tasked with monitoring and minimizing negative impacts to plant and animal populations, and bird populations can serve as particularly good indicators of ecological disturbance.
Bee Pollinator Photo
Pollinators, such as hummingbirds, bees, and butterflies, provide critical ecosystem services but face many threats. IBP is working with the US Forest Service and others to better understand distribution and abundance of bumble bees and other pollinators in the Sierra Nevada, and to develop science-based recommendations for pollinator-friendly forest management.
IBP’s Sierra Nevada Bird Observatory is always looking for new partners and collaborative opportunities to facilitate bird conservation in the Sierra Nevada. For more information contact Rodney Siegel.
Photo Credits: Top of Page, IBP; Program Thumbnails, Top to Bottom: Caleb Putnam, Tambako the Jaguar, Kelly Colgan Azar, Jade Ajani, Jason Crye, Andrew C, PE Hart, Kathleen Allison
 
SELECTED PUBLICATIONS
Peer-reviewed Publications Authored by IBP Personnel
Tingley, M.W., A.W. Stillman, R.L. Wilkerson, S.C. Sawyer, and R.B. Siegel. 2020. Black-backed woodpecker occupancy in burned and beetle-killed forests: disturbance agent matters. Forest Ecology and Management 455:117694. PDF
Blakey, R.V., E.B. Webb, D.C. Kesler, R.B. Siegel, D. Corcoran, and M. Johnson. 2019. Bats in a changing landscape: linking occupancy and traits of a diverse montane bat community to fire regime. Ecology and Evolution 2019:1-14. PDF
Blakey, R.V., R.B. Siegel, E.B. Webb, C.P. Dillingham, M. Johnson, and D.C. Kesler. 2019. Multi-scale habitat selection by Northern Goshawks (Accipiter gentilis) in a fire-prone forest. Biological Conservation. doi.org/10.1016/j.biocon.2019.108348. (For a copy of this publication, please contact Rodney Siegel.)
Blakey, R.V., R.B. Siegel, E.B. Webb, C.P. Dillingham, R.L. Bauer, M. Johnson, and D.C. Kesler. 2019. Space use, forays, and habitat selection by California Spotted Owls (Strix occidentalis occidentalis) during the breeding season: new insights from high resolution GPS tracking. Forest Ecology and Management 432:912–922. (For a copy of this publication, please contact Rodney Siegel.)
Cole, J.S., R.B. Siegel, H.L. Loffland, M.W. Tingley, E.A. Elsey, and M. Johnson. 2019. Explaining the birds and the bees: deriving habitat restoration targets from multi-species occupancy models. Ecosphere 10:e02718. PDF
Ray, C., D.R. Cluck, R.L. Wilkerson, R.B. Siegel, A.M. White, G.L. Tarbill, S.C. Sawyer, and C.A. Howell. 2019. Patterns of woodboring beetle activity following fires and bark beetle outbreaks in montane forests of California, USA. Fire Ecology 15:21. PDF
Saracco, J.F., R.B. Siegel, L. Helton, S. Stock, and D. DeSante. 2019. Phenology and productivity in a montane bird assemblage: trends and responses to elevation and climate variation. Global Change Biology 2019:25;985-086. PDF
Siegel, R.B., S.A. Eyes, M.W. Tingley, J.X. Wu, S.L. Stock, J.R. Medley, R.S. Kalinowski, A. Casas, M. Lima-Baumbach, and A.C. Rich. 2019. Short-term resilience of Great Gray Owls to a megafire in California, USA. The Condor: Ornithological Applications 121:1–13. (For a copy of this publication, please contact Rodney Siegel.)
Stillman, A.N., R.B. Siegel, R.L. Wilkerson, M. Johnson, and M.W. Tingley. 2019. Age‐dependent habitat relationships of a burned forest specialist emphasise the role of pyrodiversity in fire management. Journal of Applied Ecology 56:880-890. PDF
Stillman, A.N., R.B. Siegel, R.L. Wilkerson, M. Johnson, C.A. Howell and M.W. Tingley. 2019. Nest site selection and nest survival of Black-backed Woodpeckers after wildfire. The Condor: Ornithological Applications 121(3). PDF
White, A.M., G.L. Tarbill, B. Wilkerson, and R. Siegel. 2019. Few detections of Black-backed Woodpeckers (Picoides arcticus) in extreme wildfires in the Sierra Nevada. Avian Conservation and Ecology 14:17. PDF
Schofield, L.N., H.L. Loffland, R.B. Siegel, C. Stermer, and H.A. Mathewson. 2018. Using conspecific broadcast for Willow Flycatcher restoration. Avian Conservation and Ecology 13:23. PDF
Sieburth, D., and P. Pyle. 2018. Evidence for a prealternate molt-migration in the Rufous Hummingbird and its implications for the evolution of molts in Apodiformes. The Auk: Ornithological Advances 135:495–505. PDF
Stillman, A.N., and F. Tousley. 2018. Novel function of flutter display in the Black-backed Woodpecker. Western Birds 49:149–151. PDF
Tingley, M.W., A.N. Stillman, R.L. Wilkerson, C.A. Howell, S.C. Sawyer, and R.B. Siegel. 2018. Cross-scale occupancy dynamics of a postfire specialist in response to variation across a fire regime. The Journal of Animal Ecology 00:1–13. (For a copy of this publication, please contact Rodney Siegel.)
Loffland, H.L., J.S. Polasik, M.W. Tingley, E.A. Elsey, C. Loffland, G. Lebuhn, and R.B. Siegel. 2017. Bumble bee use of post-fire chaparral in the central Sierra Nevada. The Journal of Wildlife Management 81:1084–1097. (For a copy of this publication, please contact Helen Loffland.)
Casas, A., M. Garcia, R.B. Siegel, C. Ramirez, A. Koltunov, and S.L. Ustin. 2016. Burned forest characterization at single-tree level with Airborne Laser Scanning for wildlife habitat assessment. Remote Sensing of Environment 175:231-241. PDF
Polasik, J.S., J.X. Wu, K. Roberts, and R.B. Siegel. 2016. Great Gray Owls nesting in atypical, low-elevation habitat in the Sierra Nevada, California. The Journal of Raptor Research 50:194-206. (For a copy of this publication, please contact Rodney Siegel.)
Siegel, R.B., M.W. Tingley, R.L. Wilkerson, C.A. Howell, M. Johnson, and P. Pyle. 2016. Age structure of Black-backed Woodpecker populations in burned forests. The Auk: Ornithological Advances 133:69–78. PDF
Siegel, R.B., R. Taylor, J.F. Saracco, L. Helton, and S. Stock. 2016. GPS-tracking reveals non-breeding locations and apparent molt migration of a Black-headed Grosbeak. Journal of Field Ornithology 87:196-203. (For a copy of this publication, please contact Rodney Siegel.)
Tingley, M.W., R.L. Wilkerson, C.A. Howell, and R.B. Siegel. 2016. An integrated occupancy and home-range model to predict abundance of a wide-ranging, territorial vertebrate. Methods in Ecology and Evolution 7:508–517. PDF
Tingley, M.W., V. Ruiz-Gutiérrez, R.L. Wilkerson, C.A. Howell, and R.B. Siegel. 2016. Pyrodiversity promotes avian diversity over the decade following forest fire. Proceedings of the Royal Society B 283:20161703. (For a copy of this publication, please contact Rodney Siegel.)
Wu, J.X., R.B. Siegel, H.L. Loffland, M.W. Tingley, S.L. Stock, K.N. Roberts, J.J. Keane, J.R. Medley, R. Bridgman, and C. Stermer. 2015. Diversity of nest sites and nesting habitats used by Great Gray Owls in California. The Journal of Wildlife Management 79:937-947. (For a copy of this publication, please contact Helen Loffland.)
Rowan, E., R.B. Siegel, D.R. Kaschube, and S. Stock. 2014. North American longevity records for nine landbird species monitored at Yosemite National Park's MAPS stations. North American Bird Bander 39:153-159. PDF
Siegel, R.B., P. Pyle, J.H. Thorne, A.J. Holguin, C.A. Howell, S. Stock, and M. Tingley. 2014. Vulnerability of birds to climate change in California’s Sierra Nevada. Avian Conservation and Ecology 9:7. PDF
Siegel, R.B., R.L. Wilkerson, M.W. Tingley, and C.A. Howell. 2014. Roost sites of the Black-backed Woodpecker in burned forest. Western Birds 45:296-303. PDF
Tingley, M.W., R.L. Wilkerson, M.L. Bond, C.A. Howell, and R.B. Siegel. 2014. Variation in home range size of Black-backed Woodpeckers (Picoides arcticus). The Condor: Ornithological Applications 116:325–340. PDF
Bond, M.L., D.E. Lee, R.B. Siegel, and M.W. Tingley. 2013. Diet and home range size of California Spotted Owls in a burned forest. Western Birds 44:114-126. PDF
Bond, M.L., R.B. Siegel, R.L. Hutto, V. Saab, and S. Shunk. 2012. A new forest fire paradigm: the need for high-severity fires. The Wildlife Professional 6:46-49. PDF
Lee, D.E., M.L. Bond, and R.B. Siegel. 2012. Dynamics of breeding-season site occupancy of the California Spotted Owl in burned forests. The Condor 114:792-802. PDF
Mathewson, H.A., M.L. Morrison, H.L. Loffland, and P.F. Brussard. 2012. Ecology of willow flycatchers (Empidonax traillii) in the Sierra Nevada, California: effects of meadow characteristics and weather on demographics. Ornithological Monographs 75:1-31. PDF
Siegel, R.B., M.L. Bond, R.L. Wilkerson, B.C. Barr, C. Gardiner, and J.M. Kinsella. 2012. Lethal Procyrnea nematode infection in a Black-backed Woodpecker (Picoides arcticus) from California. The Journal of Zoo and Wildlife Medicine 43:421-424. PDF
Saracco, J.F., R.B. Siegel, and R.L. Wilkerson. 2011. Occupancy modeling of Black-backed Woodpeckers on burned Sierra Nevada forests. Ecosphere 2:art31. PDF
Siegel, R.B., R.L. Wilkerson, J.F. Saracco, and Z.L. Steel. 2011. Elevation ranges of birds on the Sierra Nevada’s west slope. Western Birds 42:2-26. PDF
Bond, M.L. D.E. Lee, R.B. Siegel, and J.P. Ward. 2010. Habitat use and selection by California Spotted Owls in a post-fire landscape. The Journal of Wildlife Management 73:1116-1124. PDF
Bond, M.L., D.E. Lee, and R.B. Siegel. 2010. Winter movements by California Spotted Owls in a burned landscape. Western Birds 41:174-180. PDF
Stock S.L., R.B. Siegel, and D.R. Kaschube. 2010. Declines in Yosemite’s bird populations. Pages 117-124 in: S. Weber, editor. Rethinking Protected Areas in a Changing World: Proceedings of the 2009 George Wright Society Biennial Conference on Parks, Protected Areas, and Cultural Sites. PDF
Siegel, R.B., R.L. Wilkerson, and D.F. DeSante. 2008. Extirpation of the Willow Flycatcher from Yosemite National Park. Western Birds 39:8-21. PDF
Bombay, H.L., M.L. Morrison, and L.S. Hall. 2003. Scale perspectives in habitat selection and animal performance for Willow Flycatchers (Empidonax traillii) in the central Sierra Nevada, California. Studies in Avian Biology 26:60-72. PDF
Siegel, R.B., and D.F. DeSante. 2003. Bird communities in thinned versus unthinned stands of Sierran mixed conifer forest. The Wilson Bulletin 115:155-165. PDF
Siegel, R.B., M.P. Nott, and D.F. DeSante. 2001. Using point counts to establish conservation priorities: How many visits are optimal? Journal of Field Ornithology 72:228-235. PDF
DeSante, D.F. 1990. The role of recruitment in the dynamics of a Sierran subalpine bird community. American Naturalist 136:429-455.
Peer-reviewed Publications by Other Researchers
Kelly. L.T., and L. Brotons. 2017. Using fire to promote biodiversity. Science 355:1264-1265. PDF
Other Publications and Reports
Campos, B.R., H.B. Loffland, and R.D. Burnett. 2019. Relationships between Willow Flycatcher and beaver-modified stream reaches in Sierra Nevada montane meadows. Point Blue Conservation Science and The Institute for Bird Populations PDF
Loffland, H. 2019. Using birds to inform meadow restoration at Clear Creek Meadow. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H. 2019. Using birds to inform meadow restoration at Hope Valley West. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H. 2019. Using birds to inform meadow restoration at Leavitt Meadow. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H. 2019. Using birds to inform meadow restoration at Lower Wolf Creek Meadow. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H. 2019. Using birds to inform meadow restoration at Pickel Meadow. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H. 2019. Using birds to inform meadow restoration at Sardine Meadow. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H. 2019. Using birds to inform meadow restoration at Wet Meadows Reservoir. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., M.W. Tingley, and R.L. Wilkerson. 2019. Black-backed Woodpecker MIS surveys on Sierra Nevada national forests: 2018 annual report. The Institute for Bird Populations. Point Reyes Station, CA. PDF
Loffland, H., and R. Siegel. 2018. Using birds to inform meadow restoration at Faith Valley. The Institute for Bird Populations. Point Reyes Station, CA. PDF
Siegel, R.B., M.L. Bond, C.A. Howell, S.C. Sawyer, and, D.L. Craig, editors. 2018. A Conservation Strategy for the Black-backed Woodpecker (Picoides arcticus) in California. Version 2.0. The Institute for Bird Populations and California Partners in Flight. Point Reyes Station, California. PDF
Siegel, R.B., M.W. Tingley, and R.L. Wilkerson. 2018. Black-backed Woodpecker MIS surveys on Sierra Nevada national forests: 2017 annual report. Report to U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., M.W. Tingley, and R.L. Wilkerson. 2017. Black-backed Woodpecker MIS surveys on Sierra Nevada national forests: 2016 annual report. Report to U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA. PDF
The Institute for Bird Populations. 2017. Bumble bees and post-fire chaparral management in the Sierra Nevada. Color brochure, 8 pp. PDF
Polasik, J.S., H.L. Loffland, R.B. Siegel, and M.W. Tingley. 2016. Assessing bumble bee communities on the Fred’s and Power Fires of the Eldorado National Forest: report for the 2015 Field Season. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Schofield, L.N., R.B. Siegel, J.X. Wu, and R.L. Wilkerson. 2016. Avian monitoring in the King Fire: surveying Black-backed Woodpeckers during the 2015 breeding season. Report to the US Forest Service, El Dorado National Forest. The Institute for Bird Populations, Point Reyes Station, CA.
Siegel, R.B., M.W. Tingley, and R.L. Wilkerson. 2016. Black-backed Woodpecker MIS surveys on Sierra Nevada national forests: 2015 annual report. Report to U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Wu, J.X., H.L. Loffland, R.B. Siegel, C. Stermer. 2016. A Conservation Strategy for Great Gray Owls (Strix nebulosa) in California. Interim version 1.0. The Institute for Bird Populations and California Partners in Flight. Point Reyes Station, California. PDF
Helton, L.W., R.B. Siegel, D.R. Kaschube, and S. Stock. 2015. The 2014 annual report of the Monitoring Avian Productivity and Survivorship (MAPS) Program in Yosemite National Park. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H., and R.B. Siegel. 2015. Monitoring bird response to restoration at Indian Valley. Report to American Rivers. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Polasik, J.S. 2015. Annotated bibliography of recently published literature on the Black-backed Woodpecker. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Schofield, L.N., R.B. Siegel, J.X. Wu, and R.L. Wilkerson. 2015. Avian monitoring in the King Fire: surveying Spotted Owls and Northern Goshawks during the 2015 breeding season. Report to the US Forest Service, Eldorado National Forest. The Institute for Bird Populations, Point Reyes Station, CA.
Siegel, R.B., M.W. Tingley, and R.L. Wilkerson. 2015. Black-backed Woodpecker MIS surveys on Sierra Nevada national forests: 2014 annual report. Report to U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Strohm, K.H., and H.L. Loffland. 2015. 2015 Willow Flycatcher Surveys in the Tahoe National Forest. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Tingley, M.W, R.L. Wilkerson, and R.B. Siegel. 2015. Explanation and guidance for a decision support tool to help manage post-fire Black-backed Woodpecker habitat. The Institute for Bird Populations, Point Reyes Station, California. PDF
Campos, B.R., R.D. Burnett, H.L. Loffland, and R.B. Siegel. 2014. Evaluating meadow restoration in the Sierra Nevada using birds and their habitat associations. Report to the National Fish and Wildlife Foundation. Point Blue Conservation Science, Petaluma, CA. PDF
Loffland, H L., and R.B. Siegel. 2014. 2014 Willow Flycatcher surveys in east-side meadows on the Tahoe National Forest. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H.L., R.B. Siegel, C. Stermer, B.R. Campos, R.D. Burnett, and T. Mark. 2014. Assessing Willow Flycatcher population size and distribution to inform meadow restoration in the Sierra Nevada and Southern Cascades. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Rowan, E., R.B. Siegel, D.R. Kaschube, and S. Stock. 2014. The 2013 Annual Report of the Monitoring Avian Productivity and Survivorship (MAPS) Program in Yosemite National Park. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., M.W. Tingley, and R.L. Wilkerson. 2014. Assessing home-range size and habitat needs of Black-backed Woodpeckers in California: report for the 2013 field season. Report to U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., M.W. Tingley, and R.L. Wilkerson. 2014. Black-backed Woodpecker MIS surveys on Sierra Nevada national forests: 2012 annual report. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., M.W. Tingley, and R.L. Wilkerson. 2014. Black-backed Woodpecker MIS surveys on Sierra Nevada national forests: 2013 annual report. Report to U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H.L, R.B. Siegel, and R L. Wilkerson. 2013. Assessing the effects of meadow restoration on bird populations in the greater Sierra Nevada: report for the 2012 field season. Report to the National Fish and Wildlife Foundation. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H.L., and R.B. Siegel. 2013. Using bird monitoring to inform meadow restoration at Ackerson Meadow. Report to American Rivers. The Institute for Bird Populations, Point Reyes Station, CA.
Loffland, H.L., R.B. Siegel, and R.L. Wilkerson. 2013. Assessing the effects of meadow restoration on bird populations in the greater Sierra Nevada: report for the 2012 field season The Institute for Bird Populations, Point Reyes Station, CA.
Rowan, E.R., D.R. Kaschube, R.B. Siegel, and S. Stock. 2013. The 2012 annual report of the Monitoring Avian Productivity and Survivorship (MAPS) Program in Yosemite National Park. Report to Yosemite National Park. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., M.W. Tingley, and R.L. Wilkerson. 2013. Black-backed Woodpecker MIS surveys on Sierra Nevada national forests: 2012 annual report. The Institute for Bird Populations, Point Reyes Station, CA.
Siegel, R.B., M.W. Tingley, R.L. Wilkerson, and M.L. Bond. 2012. Assessing home range size and habitat needs of Black-backed Woodpeckers in California: report for the 2011 and 2012 field seasons. Report to U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Bond, M.L., R.B. Siegel, and D. Craig, editors. 2012. A conservation strategy for Black-backed Woodpecker (Picoides arcticus) in California. The Institute for Bird Populations and California Partners in Flight. PDF
Holmgren, A.L., R.L. Wilkerson, and R.B. Siegel. 2012. Sierra Nevada Network bird monitoring: 2011 annual report. Natural Resource Data Series NPS/SIEN/NRDS—2012/362. National Park Service, Fort Collins, CO. PDF
Loffland, H.L., and R.B. Siegel. 2012. Using bird monitoring to inform meadow restoration at Hope Valley. Report to American Rivers. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Pyle, P., R.B. Siegel, R. Taylor, and M.K. Chambers. 2012. Evaluating 155 bird taxa for consideration as sensitive species in the U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA.
Siegel, R.B., and D.R. Kaschube. 2012. Landbird monitoring results from the Monitoring Avian Productivity and Survivorship (MAPS) Program in the Sierra Nevada. Report to U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., J.F. Saracco, R.L. Wilkerson, and S. Stock. 2012. Long-term demographics of Yosemite’s songbirds: an analysis of data from the Monitoring Avian Productivity and Survivorship (MAPS) Program in Yosemite National Park. Report to Yosemite National Park. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., M.W. Tingley, and R.L. Wilkerson. 2012. Black-backed Woodpecker MIS surveys on Sierra Nevada national forests: 2011 annual report. Report to U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Steel, Z.L., M.L. Bond, R.B. Siegel, and P. Pyle. 2012. Avifauna of Sierra Nevada Network parks: assessing distribution, abundance, stressors, and conservation opportunities for 145 bird species (Appendix A – species accounts). Natural Resource Report NPS/SIEN/NRR—2012/506A. National Park Service, Fort Collins, CO. PDF
Steel, Z.L., M.L. Bond, R.B. Siegel, and P. Pyle. 2012. Avifauna of Sierra Nevada Network parks: assessing distribution, abundance, stressors, and conservation opportunities for 145 bird species. Natural Resource Report NPS/SIEN/NRR—2012/506. National Park Service, Fort Collins, CO. PDF
Kaschube, D.R., R.B. Siegel, and S. Stock. 2011. The 2010 annual report of the Monitoring Avian Productivity and Survivorship (MAPS) Program in Yosemite National Park. Report to Yosemite National Park. The Institute for Bird Populations, Point Reyes Station, CA.
Loffland, H.L, R.B. Siegel, and R L. Wilkerson. 2011. Pre-restoration bird surveys at meadows on Sierra National Forest and Sequoia National Park. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H.L, R.B. Siegel, and R L. Wilkerson. 2011. Pre-restoration bird surveys at meadows on the east slope of the Tahoe National Forest and Plumas National Forest. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H.L, R.B. Siegel, and R L. Wilkerson. 2011. Pre-restoration bird surveys at meadows on the Eldorado and Humboldt-Toiyabe national forests and nearby lands managed by the State of California. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H.L, R.B. Siegel, and R L. Wilkerson. 2011. Pre-restoration bird surveys at meadows on the west slope of the Tahoe National Forest. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H.L, R.B. Siegel, and R L. Wilkerson. 2011. Pre-restoration bird surveys on meadows of Modoc National Forest, Ash Creek State Wildlife Area, and nearby private lands. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H.L, R.B. Siegel, and R L. Wilkerson. 2011. Pre-restoration bird surveys on meadows of Stanislaus National Forest and Yosemite National Park. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Loffland, H.L., R.B. Siegel, and R L. Wilkerson. 2011. Avian monitoring protocol for Sierra Nevada meadows: a tool for assessing the effects of meadow restoration on birds. Version 1.0. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., M.W. Tingley, and R.L. Wilkerson. 2011. Black-backed Woodpecker MIS surveys on Sierra Nevada national forests: 2010 annual report. Report to U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., J.F. Saracco, and R.L. Wilkerson. 2010. Management indicator species (MIS) surveys on Sierra Nevada national forests: Black-backed Woodpecker. 2009 annual report. Report to U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., P. Pyle, D.R. Kaschube, and S. Stock. 2010. The 2009 annual report of the MAPS Program in Yosemite National Park. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., R.L. Wilkerson, and M. Goldin Rose. 2010. Bird monitoring protocol for national parks in the Sierra Nevada Network. Natural Resource Report NPS/SIEN/NRR--2010/231. National Park Service, Fort Collins, CO. PDF
Siegel, R.B., J.F. Saracco, and D.R. Kaschube. 2009. The Monitoring Avian Productivity and Survivorship (MAPS) Program in Kings Canyon National Park: 1991-2008. Report to Kings Canyon National Park. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., R.L. Wilkerson, and D.L. Mauer. 2008. Black-backed Woodpecker (Picoides arcticus) surveys on Sierra Nevada national forests: 2008 pilot study. Report to Region 5 of the U.S.D.A. Forest Service. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., R.L. Wilkerson, and D.F. DeSante. 2007. Determining the status and distribution of Willow Flycatcher in Yosemite National Park. Report to Yosemite National Park. The Institute for Bird Populations, Point Reyes Station, CA.
Siegel, R.B. 2006. Surveying for Great Gray Owl on the Carson and Bridgeport Ranger Districts of the Humboldt-Toiyabe National Forest during the 2006 breeding season. Report to U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA.
Siegel, R.B., and R L. Wilkerson. 2005. Short- and long-term effects of stand replacing fire on a Sierra Nevada bird community. Report to U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA.
Siegel, R.B., and R.L. Wilkerson. 2005. Sample designs for avian monitoring alternatives in Sierra Nevada Network national parks. Report to the Sierra Nevada Network of the National Park Service. The Institute for Bird Populations, Point Reyes Station, CA.
Siegel, R.B., and R.L. Wilkerson. 2004. Landbird Inventory for Devils Postpile National Monument, Final Report. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., and R.L. Wilkerson. 2004. Landbird inventory for Sequoia and Kings Canyon National Park (2003-2004). Report to Sequoia and Kings Canyon National Parks. The Institute for Bird Populations, Point Reyes Station, CA. PDF
DeSante, D.F., P. Pyle, and D.R. O'Grady. 2003. The 2002 (ten-year) annual report of the Monitoring Avian Productivity and Survivorship (MAPS) Program in Yosemite National Park. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., and R.L. Wilkerson. 2003. Classifying and photographing habitat at Breeding Bird Survey point count locations throughout the Sierra Nevada. Report to U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA.
Siegel, R.B., R.L. Wilkerson, and D.F. DeSante. 2003. A rapid, inexpensive field protocol for assessing the importance of montane meadows to breeding and post-breeding birds, and a test of the late season protocol. Riparian Habitat and Floodplains Conference Proceedings, Riparian Habitat Joint Venture, Sacramento, CA. In: California Riparian Systems: Processes and Floodplains Management, Ecology, and Restoration. PDF
Albert, S. 2002. Tribal perspectives on southwestern Willow Flycatcher management and the Endangered Species Act. Pages N1-N21 in: final recovery plan, southwestern Willow Flycatcher, Appendix N. PDF
Siegel, R.B. 2002. Surveying Great Gray Owls at Sierra Nevada sites outside the greater Yosemite area: results from the 2002 field season. Report to Region 5 of the U.S.D.A. Forest Service. The Institute for Bird Populations, Point Reyes Station, CA.
Siegel, R.B., and D.F. DeSante. 2002. Avian inventory of Yosemite National Park (1998-2000). Report to Yosemite National Park. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Wilkerson, R.L., and R.B. Siegel. 2002. Establishing a Southern Sierra Meadows Important Bird Area. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B. 2001. Surveying Great Gray Owls on southern Sierra Nevada forests: results from the 2001 field season. Report to U.S.D.A. Forest Service Pacific Southwest Region. The Institute for Bird Populations, Point Reyes Station, CA.
Siegel, R.B. 2000. Evaluating biological effects of forest management practices by monitoring the nest success of landbirds: second annual report. The Institute for Bird Populations, Point Reyes Station, CA.
Siegel, R.B., and D.F. DeSante. 1999. Draft avian conservation plan for the Sierra Nevada Bioregion: a report to California Partners in Flight. The Institute for Bird Populations, Point Reyes Station, CA. PDF
Siegel, R.B., and D.F. DeSante. 1999. Evaluating biological effects of forest management practices by monitoring the nest success of landbirds: first annual report. The Institute for Bird Populations, Point Reyes Station, CA.
DeSante, D.F. 1995. The status, distribution, abundance, population trends, demographics, and risks of the landbird avifauna of the Sierra Nevada Mountains. The Institute for Bird Populations, Point Reyes Station, CA.
DeSante, D.F. 1990. An avian biomonitoring program for the national parks other natural areas to detect large-scale, long-term changes in the productivity and survivorship of land birds. Pages 285-296 in: Proceedings of the Yosemite Centennial Symposium. PDF