Now extinct in most parts of England, the red squirrel still lives in many woodlands in Northumberland.
Red Squirrels live in both native broadleaved woods and in planted conifer blocks, but cannot compete with the larger grey squirrel, which is spreading across the UK.
Conservationists are trying to halt the spread of grey squirrels into areas where red squirrels live. Trees are also being planted that provide food for red squirrels, but not grey squirrels.
Perhaps the last refuge of the Red Squirrel will be in the Kielder Forest, part of which lies within Northumberland National Park.
For more information on Red Squirrels, and the efforts being made to protect the species, visit the Red Squirrels Northern England (RSNE) website.
Sightings of red and grey squirrels can be made via this website, which also contains information about conservation efforts and the distribution of Red Squirrel across the North of England.