Contour feathers

Definition

Contour feathers are the outermost feathers on a bird's body that provide its shape and coloration. They play a critical role in flight, insulation, and protection.

5 Must Know Facts For Your Next Test

1. Contour feathers include both flight feathers (remiges) and tail feathers (retrices).
2. They have a central shaft with barbs branching off, forming a smooth surface for streamlined airflow.
3. The interlocking barbules of contour feathers help maintain their structure and aerodynamic properties.
4. These feathers can be waterproof due to an oil coating from the preen gland.
5. Molt cycles involve the replacement of contour feathers to ensure optimal function and appearance.

Related terms

Remiges: The primary flight feathers on the wings of birds responsible for generating lift.

Retrices: The tail feathers that aid in steering and braking during flight.

Preen Gland: A gland located near the base of the tail that secretes oil used for feather maintenance.