Last Updated on February 16, 2023 by Mitch Rezman What’s a feather? It’s a product of the protein known as Keratin and comes in three flavors: contour, sensory, and down – feathers. Feathers perform far more services for birds than you probably ever thought. Mature feathers are dead and can only be repaired through imping, … Continue reading What’s the Difference Between Feather Preening, Plucking & Molting?