create habitat mosaics. - Grazing Upper Green Sagebrush and Population indices, Population indices No major Cochran and River Basin and sagebrush/aspen nest counts between May & July differences in site, Anderson New Fork, WY 1981/1982, nesting but grazing and 1987 counts, and habitat dragging during characteristic data nesting reduces productivity. Nest failures correlate with early season grazing. + / - Grazing Nationwide Varied Manager survey Survey of grassland Response varied by Strassman management at 123 refuge; grazing 1987 national wildlife affects curlews both refuges positively and negatively 0 Grazing Southeastern AZ Semidesert Bird counts Daily sampling of Slight, but not Bock et al. grassland census plots by 6-8 significant, 1984 observers. preference for ungrazed plots, but numbers too low to be conclusive. + Grazing Southwest Idaho Unknown Unknown Unknown cattle grazing Bicak et al. prior to nesting 1982a season improves habitat. Curlews prefer recently grazed areas, but not year-long grazing. - Grazing Western Idaho Shortgrass Population density Finnish Grazing livestock Redmond and rangeland and # of nests and nest destroyed curlew Jenni 1986 counting during egg 4.2% out of laying or incubation 119 nests. Grazing - / 0 Western North Grasslands, riparian N/A Literature Review Review found that Bock et al. America woodland, curlews are 1993 Intermountain unaffected, or show a mixed response,
create habitat mosaics. Grazing - Upper Green River Basin and New Fork, WY Sagebrush and sagebrush/aspen Population indices, nest counts Population indices between May & July 1981/1982, nesting counts, and habitat characteristic data No major differences in site, but grazing and dragging during nesting reduces productivity. Nest failures correlate with early season grazing. Cochran and Anderson 1987 Grazing + / - Nationwide Varied Manager survey Survey of grassland management at 123 national wildlife refuges Response varied by refuge; grazing affects curlews both positively and negatively Strassman 1987 Grazing 0 Southeastern AZ Semidesert grassland Bird counts Daily sampling of census plots by 6-8 observers. Slight, but not significant, preference for ungrazed plots, but numbers too low to be conclusive. Bock et al. 1984 Grazing + Southwest Idaho Unknown Unknown Unknown cattle grazing prior to nesting season improves habitat. Curlews prefer recently grazed areas, but not year-long grazing. Bicak et al. 1982a Grazing - Western Idaho Shortgrass rangeland Population density and # of nests Finnish and nest counting during egg laying or incubation Grazing livestock destroyed curlew 4.2% out of 119 nests. Redmond and Jenni 1986 Grazing - / 0 Western North America Grasslands, riparian woodland, Intermountain N/A Literature Review Review found that curlews are unaffected, or show a mixed response, Bock et al. 1993