moineaux

In a sentence

• J'ai vu des moineaux dans le parc ce matin.

  I saw sparrows in the park this morning.

  The word 'moineaux' is used as a noun referring to the plural form of 'sparrow' (small birds).

• Les moineaux chantent joyeusement à l'aube.

  The sparrows sing joyfully at dawn.

  Here, 'moineaux' is again a plural noun and serves as the subject of the sentence.

• Cette région est connue pour ses nombreux moineaux.

  This region is known for its numerous sparrows.

  In this case, 'moineaux' describes a characteristic feature of a location, still functioning as a plural noun.