Last Updated on November 15, 2024 by Mitch Rezman What is 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 and Molting?