巣す作づくり

noun, noun or participle which takes 'suru'

nest-building; making a hive, web, den, etc.

Refers to the act of building a nest or similar dwelling by animals, birds, insects, etc. Can also be used figuratively for creating a cozy home.

• 春はるになると、鳥とりが巣す作づくりを始はじめる。

  When spring comes, birds start building nests.

• クモが軒のき下したで巣す作づくりをしている。

  A spider is making a web under the eaves.