Once you begin feeding birds in the fall, you have make a commitment. A feeder often attracts more birds to an area than natural food sources can support. Thus, if you stop feeding them, the birds might not be able to find enough food to survive. So, if you plan a vacation, be sure to have someone restock you feeder regularly while you are gone. Species we should be careful NOT to attract include bears and moose.
To prevent the spread of some avian diseases, food should not be spread on the ground, and feeders should be cleaned and disinfected regularly. Other Attractions for Birds.Birds do not have teeth; instead, they grind food in their gizzards. Birds eat small pieces of sand and gravel, or "grit" to aid the grinding process. In winter, when the ground is covered by snow, suitable grit may be hard to find. You can supply grit to birds at the feeder in the form of crushed eggshells, coarse sand, or from boxes of grit that are sold at variety and pet stores.