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Discover Nature: American Beavers

Missouri Department of Conservation

This week on Discover Nature, watch for an ecological engineer, and unsung steward of streams.

The American beaver is also North America’s largest rodent.

Their webbed hind fee, with large, flattened tails, dark brown fur, and pronounced front teeth, all suit these mammals well in their streamside habitats.

Beavers’ feeding habits vary with the seasons. During the summer, they eat corn, pond lilies, watercress, and other herbaceous plants.

But in the winter months, their diet consists almost entirely of woody vegetation – primarily eating the bark of tender twigs and the new growth layers of trees. 

Beavers have an intricate relationship to the land and other wildlife, with profound influences on their surroundings.

For centuries, beaver dams have backed up silt-laden waters, forming fertile riparian forest floors , stabilizing stream flow, and slowing runoff.

Beaver dams create ponds, which change water temperatures and other conditions for fish and many kinds of aquatic life.

In Missouri, beavers also excavate dens in high streambanks. These dens are usually accessible only through tunnel entrances below the surface of nearby water.

While they can cause a nuisance in some settings, their value to the ecosystem is vital. If you experience problems with beavers, contact a wildlife professional for advice.

Learn more about the American beaver with the Missouri Department of Conservation’s online field guide.

Discover Nature is sponsored by the Missouri Department of Conservation.

Trevor serves as KBIA’s weekday morning host for classical music. He has been involved with local radio since 1990, when he began volunteering as a music and news programmer at KOPN, Columbia's community radio station. Before joining KBIA, Trevor studied social work at Mizzou and earned a masters degree in geography at the University of Alabama. He has worked in community development and in urban and bicycle/pedestrian planning, and recently served as a Peace Corps Volunteer in Zambia with his wife, Lisa Groshong. An avid bicycle commuter and jazz fan, Trevor has cycled as far as Colorado and pawed through record bins in three continents.
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