What is the term for the two central tail feathers of a hawk?

The term for the two central tail feathers of a hawk is deck-feathers. These feathers play a crucial role in the bird's aerodynamics and maneuverability during flight. They assist with steering and provide stability, especially when the hawk is diving or making sharp turns. Understanding the anatomy of raptors, including the function and importance of these specific feathers, is essential for anyone involved in falconry, as it enhances their ability to care for and train birds effectively.

In contrast, wing-feathers refer to the primary and secondary feathers located on the wings, which are primarily responsible for flight. Rail-feathers is not a standard term used in ornithology for any specific feather type, and streamers typically refer to elongated feathers found on some species, particularly in the tail of certain birds, but they do not specifically describe the central tail feathers of hawks.