волье́ра

nouninanimatecountablefake feminine

1.
enclosure, open-air cage, animal pen, run
На́до сде́лать ему́ волье́ру побо́льше.
We should make him a bigger enclosure.
An outdoor fenced or netted space at a zoo or kennel; the masculine form «вольер» is equally common.
2.
aviary, birdcage (walk-in)
В волье́ре живу́т попуга́и.
Parrots live in the aviary.

Examples

Тигры отдыхали в большой вольере.
The tigers were resting in a large enclosure.
Дети смотрели на обезьян в вольере.
The children watched the monkeys in their enclosure.
В зоопарке построили новую вольеру для птиц.
A new aviary was built at the zoo for the birds.