One of the most heroic things I've seen recently is one little town in northern Michigan that kept a bird from going extinct.
The town is Mio, population of about 1800. The bird is the Kirtland's warbler, a small gray-and-yellow songbird that breeds in exactly one kind of habitat, mostly in a single corner of Michigan.
In 1974, the entire global population dropped to 167 singing males. The bird was one of the first species listed under the original 1966 Endangered Species Preservation Act, and it looked like the species was going to be extinct within a generation.
The problem was the habitat. Kirtland's warblers need fire-disturbed jack pine. Their entire breeding range is one specific successional stage of a fire-adapted forest. Decades of fire suppression had let the jack pine grow up past the age the birds could use. The birds had nowhere left to nest.
Mio became the staging point for the recovery. They built a forest management program: clear-cut, replant, burn, repeat. About 76,000 hectares are now managed on roughly six-year rotations to keep a continuous supply of young pine in the bird's preferred age range.
The work has paid off with the total population estimated at over 4,500 birds. The Kirtland's warbler was removed from the endangered species list in 2019, a rare full delisting.
The bird still requires active management. If the work stopped, the jack pine would age out within 20 years and the species would collapse again.