The red squirrel or Eurasian red squirrel (Sciurus vulgaris) is a species of tree squirrel in the genus Sciurus. The species has remained very common in central Europe, but has been displaced by the grey squirrel in the UK. In winter, the fur is often tinged with grey and large tufts develop above the ears. Red squirrels have a large bushy tail that is almost as long as their body. Double-jointed ankles mean red squirrels can move up and down trees with ease.