Population of Eurasian beaver (Castor fiber) in Europe

The Eurasian beaver (Castor fiber) is an intensely expansionary species. Species reintroductions, which were conducted in various parts of Europe, as well as the rate of natural increase have resulted in the growth of the number of individuals. The dynamic development of the beaver population in Europe means that the available data concerning the quantity of beavers becomes outdated very quickly. The purpose of this manuscript is to update the available information about the beaver populations in all countries of Europe. The information was collected in the second half of 2019. Some of the data collected include generally available studies and articles. For some countries, the author had difficulty obtaining any data; therefore, personal communication was employed with various governmental or scientific units in the given country. The outcomes of the conducted analyses were figures about the Eurasian beaver population throughout Europe. It was found that the Eurasian beaver population in Europe numbered nearly 1,222,000 individuals.