rewilding

verb (used with object)

1. to introduce (animals or plants) to their original habitat or to a habitat similar to their natural one: proposals to rewild elephants to the American plains.
2. to return (land) to a more natural state: rewilding an unpopulated island for use as an animal preserve.

verb (used without object)

3. to introduce living organisms to a habitat.
4. to return land to a less developed state.

noun

1. the practice of returning areas of land to a wild state, including the reintroduction of animal species that are no longer naturally found there