風かざ切きり羽ばね

noun

flight feathers

Refers to the large, stiff feathers on a bird's wing that are essential for flight. A technical ornithological term, but also used in general descriptions of birds.

• 鳥とりの風かざ切きり羽ばねは、飛ひ行こう中ちゅうに空くう気きを捉とらえる役やく割わりを果はたす。

  A bird's flight feathers serve to catch the air during flight.

• 風かざ切きり羽ばねが抜ぬけ替かわる時じ期きは、鳥とりによって異ことなる。

  The timing of flight feather molting varies by bird species.