Nick Upton / Male Eurasian beaver (Castor fiber) at night, feeding on a branch in a pond, Devon Wildlife Trust's Devon Beaver Project, Devon, UK, April.
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Nick Upton / Male Eurasian beaver (Castor fiber) at night, feeding on a branch in a pond, Devon Wildlife Trust's Devon Beaver Project, Devon, UK, April.
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Nick Upton / Eurasian beaver (Castor fiber) at night, chewing bark and climbing along a felled tree, Devon Wildlife TrustÕs Devon Beaver Project enclosure, Devon, England, UK, March.
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Nick Upton / Eurasian beaver (Castor fiber) gnawing the trunk of a Willow tree (Salix sp.) in woodland enclosure at night. Devon Beaver Project, run by Devon Wildlife Trust, Devon, UK, April. Taken by a remote cam...
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Michel Roggo / North American Beaver (Castor canadensis) dam, Northern Rockies, Muskwa-Kechika Protected Area, British Columbia, Canada, July 2011. Photographed for The Freshwater Project
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Michel Roggo / Sockeye Salmon (Oncorhynchus nerka) on spawning ground in groundwater channel, with trees cut by beavers Adams river, British Columbia, Canada, October. Photographed for the Freshwater Project.
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Ingo Arndt / Aerial view of European beaver (Castor fiber) habitat and structures. Beaver ponds, lodge, dams and felled trees are visible , Spessart, Germany, April.
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Ingo Arndt / Aerial view of European beaver (Castor fiber) habitat and structures. Beaver ponds, lodge, dams and felled trees are visible , Spessart, Germany, April.
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Nick Upton / Wood mouse (Apodemus sylvaticus), foraging on a Willow tree (Salix), heavily gnawed by Eurasian beavers (Castor fiber), at night, Devon Wildlife Trust's Devon Beaver Project, Devon, UK, April.
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Nick Upton / Male Eurasian beaver (Castor fiber) at night, swimming with a stick in its mouth before adding it to its dam, Devon Wildlife Trust's Devon Beaver Project, Devon, UK, April.
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Nick Upton / Male Eurasian beaver (Castor fiber) at night, feeding on a stick, Devon Wildlife Trust's Devon Beaver Project, Devon, UK, April.
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Nick Upton / Wood mouse (Apodemus sylvaticus), moving around on a Willow tree (Salix), heavily gnawed by Eurasian beavers (Castor fiber), at night, Devon Wildlife Trust's Devon Beaver Project, Devon, UK, April.