How crows preen?

Crows preen by using their beaks to clean and arrange their feathers, which helps maintain their plumage's waterproofing and insulation. They often target specific areas to remove dirt, parasites, and debris, ensuring their feathers are in optimal condition for flight and insulation. Additionally, crows may use their preen gland, located near the base of their tail, to spread oil onto their feathers during the preening process. This behavior is essential for their overall health and hygiene.