In trials in 1973-4 digestibility (in vitro DM disappearance) and levels of CF, CP and minerals were determined in herbage eaten by moose (Alces alces) in the NW Kenai Peninsula, Alaska. There were significant changes in all values between summer and winter in the major browse spp. Betula papyrifera, Populus tremuloides, Salix sp., Alnus sp. and Vaccinium vitis-idaea, and significant differences among spp. within seasons. Alnus sp. and Salix sp. were ranked as the best summer browse and V. vitis-idaea as the worst. In winter P. tremuloides and V. vitis-idaea were the best and B. papyrifera the worst browse spp. As the different spp. provide different nutrients, sufficient quantities of all 5 spp. could meet the needs of moose better than any single sp. The north Kenai moose range, once multispecies habitat, is now dominated by B. papyrifera and the moose population is declining.