Variable | Covariate | Scale (m) |
---|---|---|
Vegetation | ||
   Shrub height (-) | Height of shrub (cm) at nesta | 15b |
   Bare ground (-, +) | Percentage (%) of bare groundc | 30d |
   Litter (-, +) | Percentage (%) of litterc | 30 |
   Forbs (+) | Percentage (%) of forb covera | 15 |
   Grass (-) | Percentage (%) of grass covera | 15 |
   Total herbaceous (-) | Percentage (%) of total herbaceous covera | 15 |
   Sagebrush (-, +) | Percentage (%) of sagebrush coverc | 15 |
   Shrubs (+) | Percentage (%) of total shrub cover a | 15 |
   Mesic (+) | Distance (m) to mesic habitat year of nest e | N/A |
Topography | ||
   Elevation (-, +) | Elevation (m)c | 30 |
   Slope (+) | Slope (%)a | 30 |
   Roughness (+) | Roughness index (SD of elevation)a | 1,590d |
Anthropogenic | ||
   Oil and gas wells (+) | Distance (m) to wells year of nest e | N/A |
   Structures (-) | Distance (m) to structures year of neste | N/A |
   Ancillary features (-) | Distance (m) to ancillary features year of neste | N/A |
   Roads (-) | Distance (m) to roads year of nest a | N/A |
Others | ||
   Initiation date (+) | Julian date for first day of nest incubation a | N/A |
   Nest age (-) | Age of nest (in days) a | N/A |