Tasmanian devils were moved to an island for their protection. Now there's no more penguins

Efforts to save Australia's endangered Tasmanian devil population led to thousands of sea birds being wiped out on an island in the Tasman Sea, according to local environmentalists.

source https://www.cnn.com/2021/06/24/australia/tasmanian-devil-wipe-out-penguins-intl-hnk/index.html