In the 1700s, fur trappers introduced foxes to the Aleutian Islands; by 1967, 790 cackling geese remained, but by 2022, about 215,000 were estimated

Foxes released on the Aleutian Islands nearly wiped out Aleutian cackling geese, down to 790 by 1967. A recovery plan lifted them to about 215,000 by 2022.