The two central feathers on a bird's tail are called?

The correct term for the two central feathers on a bird's tail is "tail feathers." These feathers, often referred to as "rectrices," play a crucial role in steering and balancing a bird during flight. The tail is an essential aspect of avian anatomy, as it aids in maneuverability and stability.

Given that option A suggests "deck feathers," which is not a term commonly used in ornithology to describe any part of a bird's anatomy, it does not apply to the central tail feathers. The other options focus on feather classifications that do not specifically pertain to the central feathers of the tail, such as primary and secondary feathers, which are located on the wings rather than the tail.

Understanding the terminology related to bird anatomy, particularly the distinctions between different types of feathers, is important in falconry and studying avian species in general.