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Resource or habitat selection by animals is an im portant determinant of fitness and is a focus of many wildlife studies where the goal is to estimate impacts of human activity on wildlife and design mitigation strategies (Johnson et al. 2005, Johnson et al. 2006). A common approach for examining resource selection in the wildlife literature are Resource Selection Functions (RSF; Compton et al. 2002, Manly et al. 2002, Jones and Tonn 2004, Johnson et al. 2004). RSFs are attractive to ecologists because they provide quantitative, spatially-explicit, predictive models for animal occurrence (M ladenoff et al. 1995, Manly et al. 2002). Identification of im portant habitat with RSF models rather than raw data like telem etry locations is advised because of problems with sampling a small number of individuals, making inferences based on shorttemporal windows of sampling, and on theoretical grounds that predicted potential …