. The Canadian field-naturalist. Fall 11 Stomachs (28 Scats). % VA Green Vegetation Fruit Animal Other Figure 3. Aggregate percent volume occupied by each of four main food categories in the diets of interior Alaskan black bears, 1964-65, as revealed by analysis of stomach contents. Results of scat analyses are listed in parentheses. The major individual items in each category, together with their volumetric contributions, are shown above each bar chart. points to known remains of moose killed by hunters in other cases. The wing of a female goldeneye (Bucephala sp.), both wings and feet of a V
. The Canadian field-naturalist. Fall 11 Stomachs (28 Scats). % VA Green Vegetation Fruit Animal Other Figure 3. Aggregate percent volume occupied by each of four main food categories in the diets of interior Alaskan black bears, 1964-65, as revealed by analysis of stomach contents. Results of scat analyses are listed in parentheses. The major individual items in each category, together with their volumetric contributions, are shown above each bar chart. points to known remains of moose killed by hunters in other cases. The wing of a female goldeneye (Bucephala sp.), both wings and feet of a Varied Thrush (Ixoreus naevius), and pieces of fish skin all found in one stomach suggested that the bear involved had been cleaning up after a smaller predator. A fledgling White-crowned Sparrow (Zonotrichia leucophrys) and two species of microtines found in my analyses were probably captured by the bears involved. Insects of the Order Hymenoptera consti- tuted an important proportion of the animal food consumed. Adults, eggs, and pupae of ants (Formicidae) and wasps (Vespidae) occurred frequently, the former family being more im- portant in the spring season and the latter in the early fall. Other. Garbage, material discarded by hu- man beings, was taken more often in the spring than it was in the fall. Bears which ate garbage usually ate large amounts. Debris refers to naturally occurring items that were obviously accidental or at least incidental. Pieces of rot- ten wood (which often occurred when ants were present), wasp nest material, and small stones were common debris items. Discussion Food habits. The importance of green vegetation in the spring diet of black bears in interior Alaska is consistent with findings in other areas, though the specific plants involved differ from area to area. Horsetail, the predomi- nant spring food in interior Alaska, was also important in northwestern Montana according. Please note that these images are extracted from scanned page images t
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