There are a number of different ways that birds bathe. Birds with strong feet wade into the water, partially submerge themselves, spread their wings and roll back and forth. They will also submerge their head and through it back to help get water on to their back. That is how this yellow warbler bathes. Birds with weaker legs, like swallows, will just skim across the water, taking a shower as they fly. Most woodpeckers bathe by spreading their wings and feathers when it is lightly raining or misting. In areas where their is little water birds will take a dust bathe. They role around in a patch of dirt or sand. The fine dust that they bathe in collects the larger dirt and oils from their feathers and makes it easier to remove through rigorous shaking. During the winter birds typically do not bathe as often, but it is still necessary for them to bathe when they can. Often times they will bathe in snow melt or they will sometimes bathe in the snow itself. They use the snow similarly to how they would use dirt in a dirt bathe. They dig, role and throw the snow on themselves. When the snow melts the liquid washes away all of the excess gunk and the bird is clean again.