During 1964, 6746 observations were made of known numbers of black-tailed deer (Odocoileus hemionus columbianus) within an enclosure on the Cedar Creek watershed within the Tillamook Burn, Oregon. These observations provide a basis of insight into the deer''s use of vegetation within the enclosure. The interpretation centers around feeding and bedding behavior in relation to forage availability and plant communities. Indices of preference by deer for plant communities showed a spatial and seasonal nonrandom distribution of deer. Red huckleberry (Vaccinium parvifolium) was the principal browse plant; vine maple (Acer circinatum) and red alder (Alnus rubra) were unimportant as browse. Browsing of Douglas fir (Pseudotsuga menziesii) began with the first snow. Sightings of deer in the vine maple (Acer circinatum/ Polystichum munitum) community were high every month. Deer presence in the huckleberry (Vaccinium parvifolium/Gaultheria shallon) community increased in late winter, peaked in May, and declined the rest of the year. In the big-leafed maple (Acer macrophyllum/Symph-oricarpos mollis) community, deer sightings increased in late winter, declined in March and April, increased during the summer, and peaked in Oct. Relatively few deer were observed in the bracken fern (Pteri -dium aquilinum/Lotus crassifolius) and thimbleberry (Rubus parviflorus/ Trientalis latifolia) communities. Occurrance of deer in the alder (Alnus rubra/Rubus parviflorus) community was highest in spring and fall.