The word "alular" is not common in everyday vocabulary, but it refers to the small feathers located at the base of a bird's wing. Synonyms for "alular" include remex, primary coverts, or simply wing feathers. The alular feathers play an important role in a bird's flight by providing stability and control while in the air. Other words associated with bird feathers include down, contour, and filoplume. Understanding bird anatomy and terminology can enhance birdwatching experiences and appreciation for these amazing creatures.