The hooked beak of a hawk is used for predatory survival. Don't wait for the weather to turn severe before you offer food for the birds. Supply them with food when birds are scouting out their winter territories. Birds will study their resources before the cold winter hits and if your yard offers them a food source, they will come back later in the winter when food is scarce. Water Water provides birds with both a drinking source and a bathing source.
Water is also helpful in maintaining the good condition of feathers.
A suitable water area should be less than two inches deep with sloping sides. Locate the birdbath in a shaded area near a bush or tree which will provide a natural cover for the birds. Birds are very attracted to running water. If possible provide a dripping hose or mister as a water source. Hummingbirds especially enjoy flying through the cool water provided by a mister.