open-air cage, aviary, enclosure
enclosure, open-air cage, animal pen, run
aviary, birdcage (walk-in)
В зоопарке построили новую вольеру для птиц.
A new aviary was built at the zoo for the birds.
В зоопарке построили новый вольер для птиц.
A new aviary was built for the birds at the zoo.