Be Aware. Be Inspired. Be a Voice for the Wild.

Your voice helps protect wildlife and the wild places they call home.
Join the movement—by contributing or staying informed.
Be part of Mangelsen conservation community and help shape a more sustainable future for generations to come.

Conservation In Action

Mangelsen LIVE! A Night of Stories, Science, and Conservation

An Evening with Nature’s Champions: Thomas D. Mangelsen & Dr. Christopher Servheen Mark your calendar—Thursday, April 17, 7pm MT ( 6pm PT / 8pm CT / 9pm ET ) Mark your calendars for Thursday, April 17, for a captivating evening dedicated to the future of wildlife conservation. Three of the most influential voices in the world of grizzly protection and environmental advocacy will come together to share their experiences and expertise in an inspiring live event. Join Thomas D. Mangelsen, a celebrated wildlife photographer with a lifelong commitment to conservation, alongside Dr. Christopher Servheen, a leading wildlife biologist renowned for his pivotal role in grizzly bear recovery efforts throughout the Greater Yellowstone Ecosystem and beyond. The event will be hosted by Todd Wilkinson, an esteemed journalist, co-founder of Yellowstonian.org,

Mangelsen LIVE! A Night of Stories, Science, and Conservation

Protect Our Parks

Let’s Stand Together—Not Just Today, but Always.

This is not just a moment in time. It’s a movement.

Our National Parks and the wildlife that call them home—like Grizzly 399 and her descendants—need more than admiration.

They need our voices, our action, and our commitment.

The pressures on these wild places are growing- from reduced staffing in our parks to increased threats to vital habitats.

If we remain silent, we risk losing the very soul of our natural heritage.

Find a rally near you and learn how to get involved.

“Thank you for being a voice for our National Parks”
– Thomas D. Mangelsen

A Tribute to Grizzly 399: Queen of the Tetons

Join us in honoring the incredible journey of Grizzly 399, matriarch and Queen of the Tetons. Together, we can make a difference in protecting our wildlife and their habitats.

The most famous population of grizzly bears in the world lives in the ecosystem that encompasses Yellowstone and Grand Teton National Parks, and the most visible queen of all has been Grizzly 399. During her long life of 28 years, with cubs at her side, she has navigated the intersection between wilderness and people. Her harrowing journey has changed the way tens of millions of people around the globe think of both grizzlies and conservation.

Over the past two decades, legendary nature photographer Thomas D. Mangelsen has been tracking Grizzly 399 and her cubs, compiling more than one million photos along the way. Tom hopes his images and stories (co-written with conservation author Todd Wilkinson) brings the importance of 399 and the plight of American grizzlies into focus in a way that will move your heart and inspire you to join the army of advocates who want to keep this region of public lands, which belongs to all of us, forever safe and wild.

With thousands of requests for this specific calendar, combined with the growing concern for grizzly conservation and the profound respect for Grizzly 399, we decided to act swiftly to bring this project to life.

“I can’t think of anything better than to have something in the town of Jackson that will be a fitting memorial for her for generations to come and be a reminder of the importance of grizzly conservation and protection. Awareness and education is key to making this happen – Grizzly 399 did not have to die”.

A portion of the proceeds of this calendar will go towards the memorial, while the other portion will go towards actively protecting grizzlies with other conservation efforts.

Celebrating the visionary lens that inspires us to see, understand, and take action for our natural world.

Our dedication to wildlife conservation is driven by a profound love for nature and a responsibility to safeguard its wonders. Protecting wildlife and their habitats ensures that the beauty, diversity, and stories of the natural world endure for generations to come.

Get Involved

Where Your Donations Make a Difference

Your contributions will directly support vital conservation projects and education. Together, we can honor and protect wildlife and their habitats.

A Lasting Tribute to Grizzly 399

We are honored to share plans for a memorial in Jackson, Wyoming, dedicated to the life and legacy of Grizzly 399, the world’s most beloved bear and the enduring Queen of the Tetons.

With your support, we are working alongside different Jackson entities to create a meaningful space where people can gather to reflect, celebrate her extraordinary life, and learn more about grizzly bear conservation. This memorial will stand as a tribute to her impact — not just as an iconic wild mother, but as a symbol of what’s at stake in the fight to protect wildlife and wild places.

Your generosity is helping bring this vision to life.

👉 [Donate Now]
Be a part of honoring Grizzly 399’s legacy and help ensure her story continues to inspire generations to come.

Why Your Participation Matters

Our National Parks and public lands are not only places of beauty and recreation — they are vital sanctuaries for wildlife. From ancient forests to alpine meadows, these landscapes provide critical habitat for countless species, including the iconic grizzly bear.

Today, many of these protections are at risk. Efforts to delist grizzlies from the Endangered Species Act could open the door to trophy hunting, threatening decades of recovery. At the same time, budget cuts and development pressures jeopardize the health of our parks and the ecosystems they support.

Your donation helps safeguard these wild places, advocate for science-based conservation, and ensure that future generations can experience the wonder of thriving parks and wildlife.

SOLD OUT! GRIZZLY 399: 2025 COMMEMORATIVE CALENDAR

The Grizzly 399 Commemorative Calendar for 2025 was an incredible success, raising over $50,000 to protect grizzlies and support the creation of a memorial honoring our beloved Queen of the Tetons. Your overwhelming support for this project has made a lasting impact through the Thomas D. Mangelsen Wildlife Conservation Fund. Together, we are making meaningful strides to preserve the majestic creatures and wild places that inspire us all.

From the bottom of my heart, thank you for helping us honor Grizzly 399 and for your continued dedication to wildlife conservation.

Looking ahead, we’re thrilled to announce that a 2026 Wildlife Conservation Calendar is in the works — featuring new, inspiring images and powerful stories from the wild. Each calendar not only brings the beauty of nature into your life, it also contributes directly to the Wildlife Fund, supporting lasting protection for wildlife and their habitats.

Stay tuned for more details and opportunities to get involved.

Our Partners In Nature

Conservation is stronger when we stand united. Meet the remarkable partners working alongside Tom to protect wildlife and wild places. 

Address:

10152 L Street Omaha NE 68127

Contact:

(800) 228-9686 ext 519
conservation@mangelsen.org