Pinyon NC Basin, Pinyon pine Counts Point counts and Increasing pinyon Woolley and removal Mono County, woodland with census, nest pine correlates Heath 2006 CA sporadic juniper searching, and with reduced that merges into territory spot thrasher sagebrush with mapping occurrence, but decreasing limited elevation occurrence at control or treatment. Not territorial on control plots, but observed on plot after fledgling. - Invasive South Central Sagebrush Bird Count / Walking transects Sage Thrasher Brandt and species WA Steppe frequency of nest in sagebrush Rickard 1994 – Cheatgrass interspersed occurrence shrubs and with disturbed invasion by and invaded Cheatgrass that patches reduces shrub cover negatively impacts the species. - Invasive Central NV Sagebrush Relative bird Two parallel Sage Thrashers McAdoo et al. species control sites and abundance transects with 5 have affinity for 1989 – crested crested circular at shrub cover, and wheatgrass wheatgrass each site lower abundance treatment sites on plots seeded with wheatgrass. - Invasive Eastern ID Big sagebrush Successful nests Visual No Sage Thrasher Reynolds and species and former observation in occurrence is Trost 1980 – crested sagebrush range grid. grazed or wheatgrass reseeded with ungrazed plots crested seeded with wheatgrass crested wheatgrass. - Mine South Central Bird Density 73 censuses with Reclaimed sites Krementz and reclamation WY (birds/ha/census day) transects through dominated by Sauer 1982 steppe with native and common saltbrush and halogeton
Pinyon removal NC Basin, Mono County, CA Pinyon pine woodland with sporadic juniper that merges into sagebrush with decreasing elevation Counts Point counts and census, nest searching, and territory spot mapping Increasing pinyon pine correlates with reduced thrasher occurrence, but limited occurrence at control or treatment. Not territorial on control plots, but observed on plot after fledgling. Woolley and Heath 2006 Invasive species – Cheatgrass - South Central WA Sagebrush Steppe interspersed with disturbed and invaded patches Bird Count / frequency of occurrence Walking transects Sage Thrasher nest in sagebrush shrubs and invasion by Cheatgrass that reduces shrub cover negatively impacts the species. Brandt and Rickard 1994 Invasive species – crested wheatgrass - Central NV Sagebrush control sites and crested wheatgrass treatment sites Relative bird abundance Two parallel transects with 5 circular at each site Sage Thrashers have affinity for shrub cover, and lower abundance on plots seeded with wheatgrass. McAdoo et al. 1989 Invasive species – crested wheatgrass - Eastern ID Big sagebrush and former sagebrush range reseeded with crested wheatgrass Successful nests Visual observation in grid. No Sage Thrasher occurrence is grazed or ungrazed plots seeded with crested wheatgrass. Reynolds and Trost 1980 Mine reclamation - South Central WY steppe with saltbrush and Bird Density (birds/ha/census day) 73 censuses with transects through native and Reclaimed sites dominated by common halogeton Krementz and Sauer 1982
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