Brian G. Prochazka Cameron L. Aldridge Michael S. O’Donnell David R. Edmunds Adrian P. Monroe Steve E. Hanser Lief A. Wiechman Michael P. Chenaille Peter S. Coates 2023 <p>Greater sage-grouse (<i>Centrocercus urophasianus</i>) are at the center of state and national land-use policies largely because of their unique life-history traits as an ecological indicator for health of sagebrush ecosystems. This updated population trend analysis provides state and federal land and wildlife managers with best-available science to help guide current management and conservation plans aimed at benefitting sage-grouse populations. This analysis relied on previously published population trend modeling methodology from Coates and others (2021, 2022a) and incorporated population lek count data through 2022. Bayesian state-space models estimated 2.9 percent average annual decline in sage-grouse populations across their geographical range, which varied among subpopulations at the largest scale of analysis, termed climate clusters (2.2–4.7). Cumulative declines were 40.9, 65.0, and 79.6 percent range-wide across short (19 years), medium (35 years), and long (55 years) temporal periods, respectively. These results indicate that the most recent nadir for range-wide populations occurred during 2021. However, growth during 2022 was modest, making 2021 a tentative final nadir at this point.</p> application/pdf 10.3133/dr1175 en U.S. Geological Survey Range-wide population trend analysis for greater sage-grouse (Centrocercus urophasianus)—Updated 1960–2022 reports