Rectrix definition

One of the stiff main feathers of a bird's tail, used to stabilize the bird while in flight and to control its direction.

(ornithology) Any of the large tail feathers of a bird, that are important for controlling the direction of flight.

One of the stiff main feathers of a bird's tail, used to stabilize the bird while in flight and to control its direction.

A flight feather on the tails of birds, used for directional control.