For years experts have argued whether the UK has its own sub-species of the Eurasian red squirrel, the type found across the world from Europe to Japan.

More information: Yu Takahata et al, Urbanisation has impacted the population genetic structure of the Eurasian red squirrel in Japan within a short period of 30 years, Conservation Genetics (2024 ...

Distribution of two non-native squirrel species in Japan: Pallas's squirrel (Callosciurus erythraeus; left) and Eurasian red squirrel (Sciurus vulgaris; right). Sites of invasion are depicted in ...