Once a Year Swans will Moult Replacing all 25,000 of their Feathers.Collectively their Feathers are called Plumage. Moulting is the Periodic Replacement of Feathers
Enchanting, Elegant, Graceful, Majestic Mute Swans. Basic Anatomy Information. This Page is Labeled Photos of General Swan Features. Basic Anatomy of Mute Swans Click