primary feather

• Одно из крупных, жестких маховых перьев, расположенных на внешней части крыла птицы, необходимых для создания тяги и подъемной силы во время полета.

One of the large, stiff flight feathers located on the outer part of a bird's wing, essential for generating thrust and lift during flight.

1. Flight featherC1formal

   One of the large, stiff feathers on the outer part of a bird's wing, crucial for generating thrust and lift during flight.

   Маховое перо

   • The bird's primary feathers are essential for its ability to fly.
   • Ornithologists count the number of primary feathers to identify species.
   • A damaged primary feather can severely impair a bird's flight.