See below for IMBCR-related applications and resources, such as publications and factsheets. Contact Jen Timmer if you have an IMBCR data application you would like to share or complete this form if you would like to request the raw data. For IMBCR-related information and resources in the Playa Lakes Joint Venture region (e.g., annual reports), visit IMBCR for PLJV. For general information on the IMBCR program, visit this page. For a dynamic look at the program, view the IMBCR StoryMap.

Visit the Rocky Mountain Avian Data Center to access population estimates, species counts, and sampling effort for the various IMBCR strata or areas of inference.

Peer-Reviewed Publications


Walker BL, AA Yappert, CL Brennan, CM Bossu, AW Jones. 2024. Field research guided by citizen science and monitoring data reveal a novel alpine breeding distribution and vegetation associations of a declining, habitat-specialist songbird in Colorado, USA. Avian Conservation and Ecology 19:10.


Van Lanen NJ, AP Monroe, CL Aldridge. 2023. Living on the edge: Predicting songbird response to management and environmental changes across an ecotone. Ecology and Evolution 13.

Van Lanen NJ, JE Shyvers, CJ Duchardt, CL Aldridge. 2023. A multi‑ecosystem prioritization framework to balance competing habitat conservation needs of multiple species in decline. Landscape Ecology

Latif QS, NJ Van Lanen, EJ Chabot, DC Pavlacky Jr. 2023. Causal mechanisms for negative impacts of energy development inform management triggers for sagebrush birds. Ecosphere vol 14.

Van Lanen NJ, AP Monroe, CL Aldridge. 2023. A hidden cost of single species management: habitat-relationships reveal potential negative effects of conifer removal on a non-target species. Biological Conservation.

Edwards BPM, AC Smith, TDS Docherty, MA Gahbauer, CR Gillespie, AR Grinde, T Harmer, DT Iles, SM Matsuoka, NL Michel, A Murray, GJ Niemi, J Pasher, DC Pavlacky Jr, BG Robinson, TB Ryder, P Sólymos, D Stralberg, EJ Zlonis. 2023. Point count offsets for estimating population sizes of North American landbirds. Ibis 165: 482-503.


Latif QS, JB Cannon, EJ Chabot, RA Sparks. 2022. Simulated treatment effects on bird communities inform landscape-scale dry conifer forest management. Ecological Applications

Pavlacky Jr. DC, AW Green, TL George, R Iovanna, AM Bartuszevige, MD Correll, AO Panjabi, TB Ryder. 2022. Landscape-scale conservation mitigates the biodiversity loss of grassland birds. Ecological Applications


Pavlacky Jr. DC, CA Hagen, AM Bartuszevige, R Iovanna, TL George, DE Naugle. 2021. Scaling up private land conservation to meet recovery goals for grassland birds. Conservation Biology.

Zeller KA, SA Cushman, NJ Van Lanen, JD Boone, E Ammon. 2021. Targeting conifer removal to create an even playing field for birds in the Great Basin. Biological Conservation, Volume 257.

Monroe AP, DR Edmunds, CL Aldridge, MJ Holloran, TJ Assal, AG Holloran. 2021 Prioritizing landscapes for grassland bird conservation with hierarchical community models. Landscape Ecology.


Baltensperger AP, MD Dixon, DL Swanson. 2020. Implications of future climate- and land-change scenarios on grassland bird abundance and biodiversity in the Upper Missouri River Basin. Landscape Ecology 35: 1757–1773.

Michel NL, C Burkhalter, CB Wilsey, M Holloran, A Holloran, GM Langham. 2020. Metrics for conservation success: Using the “Bird‐Friendliness Index” to evaluate grassland and aridland bird community resilience across the Northern Great Plains ecosystem. Diversity and Distributions

Janousek WM, VJ Dreitz. 2020. Testing Huston’s dynamic equilibrium model along fire and forest productivity gradients using avian monitoring data. Diversity and Distributions

Latif QS, RL Truex, RA Sparks, DC Pavlacky Jr. 2020. Dry conifer forest restoration benefits Colorado Front Range avian communities. Ecological Applications doi:10.1002/eap.2142. Erratum

Latif QS, JS Ivan, AE Seglund, DL Pavlacky, RL Truex. 2020. Avian relationships with bark beetle outbreaks and underlying mechanisms in lodgepole pine and spruce-fir forests of Colorado. Forest Ecology and Management,

Green AW, HR Sofaer, DL Otis, NJ Van Lanen. 2020. Co‐occurrence and occupancy of mourning doves and Eurasian collared‐doves. Journal of Wildlife Management doi:10.1002/jwmg.21835.


Green AW, DC Pavlacky Jr, and TL George. 2019. A Dynamic Multi-Scale Occupancy Model to Estimate Temporal Dynamics and Hierarchical Habitat Use for Nomadic Species. Ecology and Evolution 9:793-803.

Janousek WM, BA Hahn, VJ Dreitz. 2019. Disentangling monitoring programs: design, analysis, and application considerations. Ecological Applications 00(00):e01922. 10.1002/eap.1922

Janousek WM, JA Hicke, AJH Meddens, VJ Dreitz. 2019. The effects of mountain pine beetle outbreaks on avian communities in lodgepole pine forests across the greater Rocky Mountain region. Forest Ecology and Management 444:374-381.


Green AW, MD Correll, TL George, I Davidson, S Gallagher, C West, A Lopata, D Casey, K Ellison, DC Pavlacky Jr., L Quattrini, AE Shaw, EH Strasser, T VerCauteren, and AO Panjabi. 2018. Using Structured Decision Making to prioritize species assemblages for conservation. Journal for Nature Conservation 45:48-57.

Peña-Peniche A, I Ruvalcaba-Ortega, O Rojas-Soto. 2018. Climate complexity in the migratory cycle of Ammodramus bairdii. PLoS ONE 13(8): e0202678.


Pavlacky DC Jr., PM Lukacs, JA Blakesley, RC Skorkowsky, DS Klute, BA Hahn, VJ Dreitz, TL George, and DJ Hanni. 2017. A statistically rigorous sampling design to integrate avian monitoring and management within Bird Conservation Regions. PLoS ONE 12(10): e0185924.

Lipsey MK, DE Naugle, J Nowak, PM Lukacs. 2017. Extending utility of hierarchical models to multi-scale habitat selection. Diversity and Distributions 23:783-793.

Dreitz VJ, LT Stinson, BA Hahn, JD Tack, PM Lukacs. 2017. A large-scale perspective for managing prairie avifauna assemblages across the western US: influences of habitat, land ownership and latitude. PeerJ 5:e2879


Swanson DL, MD Dixon, JS Palmer. 2016. A reassessment of the distribution of Virginia’s warbler in the Black Hills of South Dakota. Western Birds 47:214-226.


Mutter M, DC Pavlacky Jr., NJ Van Lanen, and R Grenyer. 2015. Evaluating the impact of gas extraction infrastructure on the occupancy of sagebrush-obligate songbirds. Ecological Applications 25:1175-1186.

Lipsey MK, KE Doherty, DE Naugle, S Fields, JS Evans, SK Davis, N Koper. 2015. One step ahead of the plow: using cropland conversion risk to guide Sprague’s Pipit conservation in the northern Great Plains. Biological Conservation 191:739-749


Pavlacky DC Jr., JA Blakesley, GC White, DJ Hanni, and PM Lukacs. 2012. Hierarchical multi-scale occupancy estimation for monitoring wildlife populations. Journal of Wildlife Management 76:154-162.

Trend Estimates through 2022

To access IMBCR trend estimates and a readme doc explaining the estimates, click here.

Overlay Projects and Data Applications

Google sheet containing information about overlay projects and data applications organized by habitat and organization with links to respective reports and other deliverables.

Data Requests

Google sheet of all IMBCR data requests from 2010-present



Reflections from the 2023 IMBCR Field Season by Matthew McLaren

A Day in the Life of a Field Technician by Julia Snieder


Rare Bird Alert! A Story of the Yellow Rail Detection in Colorado by Eric DeFonso

Birds by the Numbers by Jessie Reese, BCR

Monitoring birds and coordinating people by Jen Timmer, BCR


A morning on the IMBCR project by Jeremy Halka, Intermountain Bird Observatory


Fire, Forests, and Birds by Quresh Latif, Bird Conservancy of the Rockies

Integrated Monitoring for Rangeland Birds by Jen Timmer, Bird Conservancy of the Rockies

Beetles and Birds by Quresh Latif, Bird Conservancy of the Rockies

Follow the Data to Follow the Birds by Lily Abromeit, Playa Lakes Joint Venture

Integrated Monitoring in Bird Conservation Regions: Over Ten Years and Counting by Jen Timmer, Bird Conservancy of the Rockies


Six Seasons of Birds & Prairies by Michael McCloy, Texas A & M University

Private Land, Public Birds by Jen Timmer, Bird Conservancy of the Rockies

Conservation Ranching Initiative: Monitoring on Conservation Ranches by Evan Barrientos, Audubon Rockies


10 Years and Still Counting by Jen Timmer, Bird Conservancy of the Rockies

Off the Beaten Track by Bill DeMott, Bird Conservancy of the Rockies

A Tale of Two Methods by Rachel Sill, University of Wisconsin


IMBCR Ramping Up for Expanded Field Effort by Nick Van Lanen, Bird Conservancy of the Rockies


Collaborating Across the Atlantic to Conserve Birds by Max Mutter, Oxford University

IMBCR Survey Season Featured New Frontiers … and Lots of Rain! by David Kramer, Bird Conservancy of the Rockies


Sage Decisions: A New Tool for Sage-Steppe Management by Intermountain West Joint Venture

New Species Detected for IMBCR Program by Nick Van Lanen, Bird Conservancy of the Rockies


Rare Bird Spotted During IMBCR Training by Nick Van Lanen, Bird Conservancy of the Rockies

New Locales Lead to Cool New Species for IMBCR Program by Nick Van Lanen, Bird Conservancy of the Rockies


Scientists from Across the West Gather to Advance Bird Monitoring by Bird Conservancy of the Rockies