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1935 - Finland: in 1935, 17 Eurasian beavers were reintroduced, then two years later North American beavers sourced from New York were released. At the time, a difference between the species was unknown. Today, the North American beaver is considered an invasive species in Finland, and outnumbers Eurasian beavers 5:1.
A five-year trial reintroduction at Knapdale in Argyll started in 2009 and concluded in 2014. [72] A few hundred beavers live wild in the Tay river basin, as a result of escapes from a wildlife park. [73] A similar reintroduction trial is being undertaken on the river otter in Devon, England. [74]
The Eurasian beaver (Castor fiber) or European beaver is a species of beaver widespread across Eurasia, with a rapidly increasing population of at least 1.5 million in 2020. The Eurasian beaver was hunted to near-extinction for both its fur and castoreum , with only about 1,200 beavers in eight relict populations from France to Mongolia in the ...
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North American beaver in Yellowstone National Park. The IUCN Red List of mammals lists both beaver species as least concern. [40] [41] The North American beaver is widespread throughout most of the United States and Canada and can
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Species reintroduction is the deliberate release of a species into the wild, from captivity or other areas where the organism is capable of survival. [1] The goal of species reintroduction is to establish a healthy, genetically diverse, self-sustaining population to an area where it has been extirpated, or to augment an existing population. [2]
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