Fill in the table “The structure of bird feathers”
| November 13, 2020 | Education
| 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 |
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.