Reindeer vegetation-type selection, activity, and food habits were studied from 1976 to 1978. Results from aerial surveys and on-ground observations showed a preference for Tussock-Shrub Tundra in spring, Low-Medium Willows in early summer, and Saltgrass Meadows in mid-summer. Feeding was the activity most frequently observed in Tussock-Shrub Tundra and Low-Medium Willows; while non-grazing activities, such as standing and trotting/galloping, were most common in Saltgrass Meadows. Preferred foods in spring were lichens and evergreen shrubs; deciduous shrubs, lichens, and forbs were preferred in early summer; and deciduous shrubs and forbs were preferred in mid-summer. Vegetation-type preferences were positively correlated with availability of preferred foods in spring and early summer but negatively correlated in mid-summer, when vegetation types were selected on the basis of insect-relief value, rather than forage availability.