Summary

Beavers are widespread in estuaries and tidal wetlands in the Pacific Northwest of the United States, demonstrating that they are not restricted to rivers and streams, Gregory Hood at the Skagit River System Cooperative, U.S., reports July 8, 2026, in the journal PLOS One . Beavers are famous for their construction skills, building domed lodges and damming rivers with logs. The ponds their dams create can provide important habitat for plants, birds and fish, and their ability to alter ecosystems has given them the title of " ecosystem engineers ."

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