Restoring the Wood Bison: Alaska’s Largest Wildlife Reintroduction Project

For decades, Alaska was missing one of its most iconic native species: the wood bison. Once roaming the boreal forests and river valleys of the great white north, the animals had vanished from Alaska by the early 1900s due to overhunting and habitat disruption. Their disappearance left a quiet ecological void in ecosystems where large herbivores had once shaped the landscape.

The Alaska Wildlife Conservation Center (AWCC), founded in the 1990s, emerged as an unexpected but effective force in reversing that loss. Today, its most celebrated achievement is the Wood Bison Restoration Project—a landmark conservation effort that returned North America’s largest land mammal to the wild after more than a century of absence.

A Species on the Brink

By the mid‑20th century, wood bison were considered nearly extinct in North America. Only a few hundred survived in remote pockets of Canada. Their decline represented more than the loss of an animal—wood bison played a role in maintaining the health of northern ecosystems, opening pathways through dense willows, grazing meadows, and redistributing nutrients across the landscape. They also played a role for indigenous in the area. When a genetically pure herd was discovered in Canada in the 1950s, it became the foundation for slow, careful recovery efforts. Still, for Alaska, the species remained missing.

Laying the Groundwork in Alaska

In the early 2000s, the Alaska Department of Fish & Game and federal agencies sought a partner capable of caring for a founding herd and preparing it for eventual release. The Alaska Wildlife Conservation Center stepped forward.

Between 2003 and 2008, 13 wood bison were transferred from Elk Island National Park in Alberta to the AWCC. Over time, the herd grew to more than 150 animals, making AWCC home to the largest wood bison group in the United States.

Unlike traditional zoo management, AWCC’s role was deeply ecological:

-Provide expansive, naturalistic habitat

Photo via source

-Maintain genetic diversity

-Allow bison to form natural social structures

-Condition the herd for life in the wild

For nearly a decade, AWCC served as both caretaker and steward for a species on the brink of a second chance.

A Historic Release

In 2015, after years of planning, Alaska reintroduced wood bison to the wild for the first time in over 100 years. Using specialized transport vehicles and river barges, wildlife managers moved 130+ wood bison to the Innoko River region of western Alaska. Their release marked the largest land mammal reintroduction in U.S. history.

What followed was ecological history in motion. Bison adapted to wild foraging. Calves were born within the first year. Subherds began exploring different river systems. The population established stable patterns of movement and grazing. Today, wild wood bison once again shape the meadows and floodplains of Alaska—an ecological restoration many decades in the making.

AWCC’s Continuing Role

Photo via source

The success of the reintroduction did not end with the release. AWCC remains essential in several ongoing efforts:

1. Genetic and breeding research - The center continues to maintain a herd for potential future releases, ensuring genetic stability and a long-term recovery strategy.
2. Public education - Through interpretive exhibits and daily programs, visitors learn about wood bison ecology, conservation challenges, and the cultural significance of the species to Indigenous Alaskan communities.
3. Wildlife partnership model -AWCC’s collaboration with state, federal, and Canadian agencies stands as a model for cross-border species recovery.

Beyond the Bison

While the wood bison project is AWCC’s flagship success, the center also contributes to conservation by caring for orphaned or injured animals— including moose, bears, foxes, eagles, muskox, and owls—most of whom cannot return to the wild. These residents help shape public understanding of Alaska’s wildlife and the pressures they face.

A Conservation Story Still Being Written

The return of the wood bison shows how long-term commitment, careful planning, and cross‑agency cooperation can reverse a century-old ecological loss. The Alaska Wildlife Conservation Center played a critical role in restoring a species many believed was gone forever from Alaskan soil.

As conservation challenges mount globally, the wood bison stands as a reminder that restoration is not only possible—it is achievable at scale. And in the quiet floodplains along the Innoko River, the sound of wood bison grazing again is proof that ecosystems can heal when given the chance.