Natural History
Microtus arvalis ronaldshaiensis is one of five varieties of the Orkney vole, a sub-species of the common vole found only in the Orkney islands. Larger than the common vole, it resembles the field vole but has shorter, paler fur.
The Orkney voles were introduced to the archipelago in Neolithic times. The oldest known radiocarbon-dated fossil of the Orkney vole is 4600 years BP, which marks the earliest possible date of introduction.
Read more about this topic: South Ronaldsay
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