Species analysis
Statistical exploration
Classification trees
Variables
Northern Pygmy-Owl
Occurred the most disproportionately in hexagons with annual
precipitation more than 431 mm, with moderate or great topographic
variation, and with a relatively large amount of public land and little or
no big sagebrush shrubland. Among somewhat drier hexagons (303-
431 mm annual precipitation), most likely to occur in hexagons with
any ponderosa pine forest. In the driest part of its Oregon range (218-
303 mm annual precipitation), it is most likely to occur where May
minimum temperature (hex. med.) is -1� C. The logistic regression
analysis showed positive or negative association with mixed conifer
forest (Northeast Oregon), ponderosa pine - juniper woodland, road
density, stream density, and July maximum temperature (hex. min.).
Classification trees
Hexagons: using ONHP land cover classification (accuracy score: 89.77)
Squares: using ONHP land cover classification (accuracy score: 89.84)
Hexagons: using AVHRR land cover classification (accuracy score: 89.30)
