Fill in the table “The structure of bird feathers”

A type Structural features Body location Value
Contour Rod of medium length, small fans Whole body Increases airflow during flight
Flight feathers The rod is long, the fans are wide, they run almost along the entire length of the rod Wings Creates a flying surface for the wing, provides forward movement
Helmsmen Larger than contour, but shorter than flight feathers Tail (tailbone) Adjust the direction of flight
Downy The shaft is thin, flexible, barbs do not form a fan (no hooks) Whole body Keep warm, participate in thermoregulation
Hairy The rods are thin, no barbs, protrude above the surface of the contour feathers Whole body Participate in touch
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