Species analysis   Statistical exploration   Classification trees   Variables  

Black-throated Sparrow
Occurred the most disproportionately in southern Oregon hexagons with more than 38% big sagebrush shrubland and May maximum temperature (hex. min.) of 15-20� C. The logistic regression analysis showed positive or negative association with big sagebrush shrubland, elevation (hex. avg.), the extent of public land, and-to a lesser degree-barren, seasonally wet playa, salt desert scrubland, ponderosa pine forest, and mixed conifer forest (Northeast Oregon).

Classification trees
Hexagons: using ONHP land cover classification (accuracy score: 93.02)
Squares: using ONHP land cover classification (accuracy score: 96.09)
Hexagons: using AVHRR land cover classification (accuracy score: 93.02)