Photograph (c) Yellowstone National Park
ROCKY MOUNTAIN POPULATION
Today, less than 20 percent of all continental Trumpeter Swans nest, breed, or winter in the Rocky Mountain Population (RMP). In 2015, there were a reported 11,700 Trumpeter Swans in the RMP.
The majority (95%) of the Rocky Mountain Population nests in Northern Alberta, British Columbia and the Yukon Territory. For the most part this group migrates to the tri-state region of Montana, Idaho and Wyoming for the winter, joining a small population (nearly 550 white birds) of non-migratory Trumpeters that nest in the region. In 2015, there were an additional 216 white swans in the "Other Flocks" of the United States RMP. The RMP is generally divided into three main flocks: Canadian, Tri-State/Greater Yellowstone area, and "Other Flocks."
United States RMP of special concern
The United States's RMP of less than 800 white swans is of particular concern.
United States RMP flocks include swans that nest in the Greater Yellowstone region of Montana, Wyoming, and Idaho. In winter, they are joined by several thousand swans from the Canadian flock, putting pressure on the limited areas with open water and available food.
The "Other Flocks" in the US RMP are restoration flocks in Oregon (Summer Lake Wildlife Area of Oregon and Malheur National Wildlife Refuge), Nevada (Ruby Lakes National Wildlife Refuge), eastern Washington (Turnbull National Wildlife Refuge) and Montana (the Flathead Valley and the Blackfoot Valley).
We are continuing our partnership work to increase the number of Trumpeter Swans in the US RMP through
- our membership on the Swan Technical Committee of the Pacific Flyway where swan management decisions and goals are made
- our partnership in the Oregon Restoration Project
- our participation in the Greater Yellowstone Working Group of the Pacific Flyway
The major threats facing Trumpeter Swans in the RMP are:
- Flock isolation and lack of connectivity between the United States flocks
- Changing hydrology negatively affecting nesting wetlands
- Harsh weather conditions that often include severe winters and cold, wet springs depressing nesting attempts and success
- Limited winter habitat
- Marginal habitat limiting suitable nesting territories
Swan populations, including the Rocky Mountain Population
The three flocks of the Rocky Mountain Population are Canadian (green), Tri-State/ Greater Yellowstone area (blue) and "Other" restoration flocks (purple).
Map from United States Fish and Wildlife Service 2015 North American Trumpeter Swan Survey
Northwest Montana is seeing new Trumpeter Swans in the Flathead Valley. Here are Trumpeter Swans from the project seen at Polson, Montana. Photograph by Carey Smith
This remarkable male swan at Turnbull National Wildlife Refuge in eastern Washington left a legacy of swan longevity against amazing odds. Read the story of "Solo", a male swan that lived an estimated 45+ years, more than twenty years alone. Photograph by Carlene Hardt
Oregon Restoration Project
We are a partner in the Oregon Restoration Project. We partner with the Oregon Department of Fish and Wildlife and the United States Fish and Wildlife Service to bring Trumpeter Swans back to Oregon where they had been missing for decades.
In 2009, we began releasing Trumpeter Swans at Summer Lake Wildlife Area with a goal of restoring a healthy, viable, and sustainable breeding population of Trumpeter Swans to eastern Oregon.
By December 2018 the Project has released a total of 116 Trumpeters at Summer Lake Wildlife Area. Trumpeter Swans in the project receive green neck collars for tracking.
Your donation to the Oregon Restoration Project helps bring Trumpeter Swans back to Oregon.
GREATER YELLOWSTONE ECOSYSTEM
The Trumpeter Swans that nest in the Greater Yellowstone region of Idaho, Montana, and Wyoming in and surrounding Yellowstone National Park were the only group that survived in the U.S. south of Canada by 1930 as Trumpeters neared extinction. These Greater Yellowstone swans are one of the best-known icons of North American wildlife conservation and treasured by thousands who read E. B. White's "Trumpet of the Swan" in their school days.
During the past few decades their nesting effort and adult numbers have risen very slowly and these swans face significant threats including isolation, winter habitat scarcity, and changing hydrology reducing wetland suitability.
TTSS continues its decades-long work with regional partners to address these serious issues.
Map of Greater Yellowstone/Tri-State area
Pink regions on the map are swan habitat in the Greater Yellowstone Ecosystem/Tri-State Area
For more swan viewing sites, check the Greater Yellowstone Ecosystem Map. Harriman State Park, near Island Park, Idaho, has nesting and wintering swans with easy viewing. Photograph by Margaret Smith
In 1932 Yellowstone National Park was one of three areas the National Park Service documented as having Trumpeter Swans. The Park has seen a decline in the number of swans in the past few decades and is working to restore Trumpeter Swans.
Yellowstone National Park
In 1932 Yellowstone National Park was one of three areas the National Park Service documented as having Trumpeter Swans. The Park has seen a decline in the number of swans in the past few decades and is working to restore Trumpeter Swans. In 2017, there were only two nesting pairs of Trumpeter Swans in the Park. TTSS is a partner with the Park on swan issues. Photograph by Margaret Smith