gliding

Japanese: gliding

...It is thought that pterosaurs also flew by gliding. Flying fish swing their tails powerfully underwater, and then use the momentum to jump above the water surface and glide by spreading their long pectoral fins to the left and right. Large birds can also glide without moving their wings, but in many cases they use updrafts to soar up and down. ...

From [Birds]

...To give just one example, the numbers of actual feathers included the whooper swan (November) with 25,216 feathers, the song sparrow (March) with 2,093 to 2,208 feathers, and the titmouse with 1,140 feathers (June) to 1,704 feathers (February).
[Flight method and wing type]
Bird flight can be broadly divided into gliding and flapping flight. Gliding uses potential energy in the same way as gliders do.

From [Flight]

…There are various ways for insects, birds, bats, and other animals to fly, but the most typical is flapping flight. Gliding and hovering are also commonly seen. Flapping flight is seen in most flying animals. …

*Some terminology explanations that mention "gliding" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…翼竜の仲間も滑空によって飛んでいたと考えられる。トビウオは水中で尾を強力に振り，その勢いで水面上に飛びだし，長い胸びれを左右に広げて滑空glidingする。大型の鳥も翼を動かさずに滑空することがあるが，多くの場合，上昇気流を利用して舞い上がったり舞い下りたりする帆翔soaringをしている。…

【鳥類】より

…1例をあげると，正羽だけの数だが，コハクチョウ(11月)2万5216枚，ウタスズメ(3月)2093～2208枚，コガラ1140(6月)～1704(2月)枚などである。
［飛翔法と翼型］
　鳥類の飛翔法は，滑空glidingと羽ばたき飛翔に大別できる。滑空はグライダーの滑空と同じ原理で，位置エネルギーを利用する。…