Beaver food caches are an important component of beaver ecology at northern latitudes where surface water remains frozen for months each year. Aerial surveys of these caches have been used since the 1940s to monitor beaver abundance and distribution. Kanuti refuge attempts to conduct beaver food cache surveys at 5-year intervals. 

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Species

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A bright blue sky obstructed by fluffy white clouds reflected off of a stream shot from inside a kayak
The U.S. Fish and Wildlife Service manages an unparalleled network of public lands and waters called the National Wildlife Refuge System. With more than 570 refuges spanning the country, this system protects iconic species and provides some of the best wildlife viewing opportunities on Earth.
Program
Washington,DC

Facilities

Kanuti Flats aerial view with spotted bodies of water.
Kanuti National Wildlife Refuge
The Athabascan name for Kanuti is "Kk'toonootne" which translates to "well traveled river by both man and animals." Kanuti Refuge is about the size of the state of Delaware and straddles the Arctic Circle, with approximately a third of the Refuge above the Circle and two-thirds below it. Kanuti...
National Wildlife Refuge
Fairbanks,AK