NOUN
- one of the main flight feathers projecting along the outer edge of a bird's wing
How To Use primary feather In A Sentence
- Male asities enlarge their wattles when they display to females and their outer primary feathers produce a buzzing sound when they fly.
- Blackish-brown feathers run from the tips to the primary feather (one of the main flight feathers projecting along the outer edge of a bird's wing) tectrices. CreationWiki - Recent changes [en]
