What is another word for quill feathers?
Pronunciation: [kwˈɪl fˈɛðəz] (IPA) 
Quill feathers are the long, stiff feathers located at the base of a bird's wings. These feathers provide stability and lift during flight. Synonyms for quill feathers include pinions, spines, primaries, and flight feathers. Pinions are the primary feathers of a bird's wing, used for steering and propulsion. Spines are the stiff, sharp feathers found on the neck and back of some birds, such as porcupines and prickly pears. Primaries are the longest and strongest feathers on a bird's wing, used for the primary thrust during flight. Flight feathers are any of the feathers that enable a bird to fly, including the quill feathers, pinions, spines, and primaries.
