When to Feed Birds. Some birds will visit feeders year_round once they are familiar with the location of a dependable food supply. Birds are most easily attracted in winter, however, because natural food supplies are least abundant then. Feeders should be set up in late summer or early fall, then maintained through the winter and spring until natural food sources are again abundant.
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.).