Birds will come to depend on the food you put out, so try to feed regularly all year round. Consider a variety of foods and feeding methods as birds have differing feeding needs. Hanging feeders and bird tables are ideal options. Ensure feeding stations are cleaned regularly ideally using an appropriate disinfectant.
Only put out as much food as will be consumed in one or two days and replace any wet or old food promptly. Have fresh drinking water available at all times.