An occasional sharp high bark soon revealed the source as a little gray squirrel.
broadleafasional felling of a narrow belt of mature broadleaves may be justified where gray squirrel incursions are known to occur.
Predicting gray squirrel expansion in North Italy: a spatially explicit modeling approach.
The magnitude of threat to red squirrels is the threat from gray squirrel incursion.
Leatherette swivel chair, stroking the bushy tail of a gray squirrel.