Those of us interested in wildlife can help avoid conflicts, which always end up with the moose or bears as the losers. To protect wildlife and keep problems from arising, either locate feeders out of reach of moose and bears, or put up feeders after bears are hibernating (Nov. 1) and take them down before bears begin to wake up in spring (mid_March). Don't feed birds in any way that will harm them. Keep feeders clean, and clean up the area on the ground around feeders that may attract other wildlife species to feeders.
Thus, natural cavities are sparsely distributed, particularly in young forests, in areas with low woodpecker populations, and in areas where dead trees have been cut down. In these types of areas, cavity_nesting birds often have difficulty finding nesting and roosting sites and will readily use suitable birdhouses. Properly constructed birdhouses provide nesting and roosting birds the same protection as natural cavities in trees. This includes protection from wind, rain, cold, and nest predators (red squirrels, weasels, ravens, crows, jays, etc.).