Using a combination of fine-scale GPS data and directed experiments, we evaluated the perceived risk and foraging behavior of Humboldt martens (Martes caurina humboldtensis), an endangered subspecies of Pacific marten. We used GPS collars to collect location data every five minutes (15M:4F, northern California, southern Oregon). We compared vegetation characteristics between resting sites, movement paths, and giving up density (GUD) experiments with diminishing bait returns. We stratified GUD experiments equally within five treatments differing by stand age and complexity. We used remotely triggered cameras to quantify marten visits and categorize vigilance, predicting these would correlate with individuals’ GPS locations (mean±SD: recent clear cuts 3.7±2.8%, regenerating forest 4–20 years 48.3±34.3%, forest >20 years 23.6%±34.9%, riparian 24.4±15.5%). Rest sites often occurred in large structures or rock piles near a high density of downed logs. Within home ranges, martens’ GPS locations were similar to available. One study area, an industrially managed landscape, only had stands <100 years old. Dissimilarly between methods, martens visited baited GUD experiments within riparian more than other landcover types. Visit length did not differ by strata (9.6±16 minutes). Vigilance decreased as the number of visits increased. Multiple methods enhanced our understanding of habitat use and behavior.