Remarkable as it may sound birds bathe in the winter to keep warm. In fact, bathing during this our coldest season of the year is actually more important to birds than it is in summer. This may seem hard to fathom at first. However, when you stop and think about it, bathing at this time of the year makes a lot of sense.
A bird’s feathers help insulate it from the cold. These feathers provide the most insulation when they are clean and properly groomed. If you were to look at the feather of a bird through a microscope, you would find that each feather is equipped with a myriad of tiny barbs or hooks. The barbs on adjacent feathers interlock with one another forming barrier that helps to hold body heat in and cold air out.
As a bird goes about feeding and flying, these barbs become “unzipped.” When this occurs, the feathers’ ability to insulate a bird from frigid weather diminishes.
After a bird takes a bird in your birdbath, it will spend considerable time preening its feathers. During this process, the bird uses its bill interlock the feathers once more. Once this task is accomplished, the bird is better able to deal with winter’s blustery weather.