NC Prescribed Upper Snake Big sagebrush Bird density Territories estimated with Along with Brewer’s burning River plain, ID (territories/km2) spot-map method and Sparrows, sage sparrows census over 5 represented nearly 90% of total birds on plots. Densities varied by years for both treatments, but unaffected by fire. NC Prescribed Southeastern ID Big sagebrush Activity budget Territories delimited using Little change in foraging burning flush technique and nests habits after fire, but do found with rope-dragging become more generalized within territories. feeders. Males expend more energy in territorial maintenance post-burn NC Grazing Eastern ID Big sagebrush and Successful nests Visual observation in 4-ha Slight increase in number of (sheep) former sagebrush grid. nests in grazed plots, but range reseeded difference small enough to with crested be inconclusive. wheatgrass - Mechanical Northeast UT Sagebrush-steppe Density (birds/ha) Applied experimental Decreased abundance in first thinning cover mechanical thinning to year post-treatment and did shrub cover. 2,400-m not recover. transects in 4 600-m legs along cardinal bearings for bird surveys. Herbicide - Southern OR Density Recorded all sight and Sage sparrow abundance did (individuals/km2) sound observations along not decrease in first year, but rangeland 610 m linear strip gradually decreased in transects. Herbicide 2,4-D following 2 years. treatments. Juniper + Central OR Semi-arid, upland Abundance Sampled avian and veg Highest density in removal plant communities (birds/ha/yr), communities in 4 cover but still occur in diversity types: post-burn grassland, juniper at lower shrub-steppe; density. No occurrence in western old growth juniper. juniper; old-growth western juniper NC Pinyon Great Basin, Pinyon pine Counts Point counts and census, Detected just beyond removal Mono County, woodland with nest searching, and treatment during nearly CA sporadic juniper territory spot mapping every census, but did not
Prescribed burning NC Upper Snake River plain, ID Big sagebrush Bird density (territories/km2) Territories estimated with spot-map method and census over 5 Along with Brewer’s Sparrows, sage sparrows represented nearly 90% of total birds on plots. Densities varied by years for both treatments, but unaffected by fire. Prescribed burning NC Southeastern ID Big sagebrush Activity budget Territories delimited using flush technique and nests found with rope-dragging within territories. Little change in foraging habits after fire, but do become more generalized feeders. Males expend more energy in territorial maintenance post-burn Grazing (sheep) NC Eastern ID Big sagebrush and former sagebrush range reseeded with crested wheatgrass Successful nests Visual observation in 4-ha grid. Slight increase in number of nests in grazed plots, but difference small enough to be inconclusive. Mechanical thinning - Northeast UT Sagebrush-steppe cover Density (birds/ha) Applied experimental mechanical thinning to shrub cover. 2,400-m transects in 4 600-m legs along cardinal bearings for bird surveys. Decreased abundance in first year post-treatment and did not recover. Herbicide - Southern OR rangeland Density (individuals/km2) Recorded all sight and sound observations along 610 m linear strip transects. Herbicide 2,4-D treatments. Sage sparrow abundance did not decrease in first year, but gradually decreased in following 2 years. Juniper removal + Central OR Semi-arid, upland plant communities Abundance (birds/ha/yr), diversity Sampled avian and veg communities in 4 cover types: post-burn grassland, shrub-steppe; western juniper; old-growth western juniper Highest density in but still occur in juniper at lower density. No occurrence in old growth juniper. Pinyon removal NC Great Basin, Mono County, CA Pinyon pine woodland with sporadic juniper Counts Point counts and census, nest searching, and territory spot mapping Detected just beyond treatment during nearly every census, but did not
Sagebrush%20birds%20WAFWA%20draft%2010-27-16.docx