Tail covert refers to the feathers that cover the base of the tail on birds like chickens, ducks, and pigeons. Synonyms for tail covert may include under-tail coverts, under-tail feathers, tail coverts, or subcaudal feathers. These feathers are important for birds as they help them to navigate and maintain balance during flight. They can also play a significant role in the courtship display of male birds during mating season. Understanding the different synonyms for tail covert can aid in identifying and describing different bird species, providing bird watchers and ornithologists a deeper appreciation for the unique and vital role these feathers play in avian biology.