What are the feathers that run down the wing above the primaries and secondaries called?

The feathers that run down the wing above the primaries and secondaries are referred to as coverts. These feathers serve an important aerodynamic function by helping to streamline the wing, which enhances the bird's ability to fly effectively. Coverts provide insulation and contribute to the overall shape of the wing, reducing turbulence during flight.

The primaries are the main flight feathers located at the tip of the wing, while the secondaries are found along the inner part of the wing. Coverts not only protect these primary and secondary feathers but also play a significant role in protecting the wing from wear and helping with feather maintenance. Understanding the structure of a bird’s wing, including the role of coverts, is essential for falconers, as it contributes to their knowledge about bird anatomy, flight mechanics, and health.