The Colossal Foundation Name Seven Species for the Second Cohort of Their Species Reintroduction Fund

Seven threatened species across four continents have been selected as the second class of the world's only fund dedicated to returning species to the wild.

BY Colossal Biosciences

The Colossal Foundation and Re:Wild have named the second cohort of their Species Reintroduction Fund: seven threatened species across four continents. The class spans a banteng airlifted into a Cambodian sanctuary; brown howler monkeys returning to a Rio national park where the last was recorded by Charles Darwin in 1832; black-footed ferrets, every living survivor descended from just seven animals, bound for a 148,000-acre South Dakota bison ranch; and the sunflower sea star, coaxed back to a Pacific seafloor a wasting disease had emptied of an estimated 99 percent of the species.

The announcement is anchored by a success: the Sihek, a Guam kingfisher declared extinct in the wild in 1988, was released onto a remote, snake-free atoll in 2024. Eighteen months later, all nine birds are alive and have laid the first wild Sihek eggs in a generation. The Fund is sending a second cohort of nine out this year.

This story is based on original reporting by Green Matters Staff for Green Matters. Read the full feature on Green Matters → https://www.greenmatters.com/big-impact/nobody-told-these-seven-species-they-were-supposed-to-stay-gone