There are three kinds of tree squirrels in Santa Clara County. The Western Gray squirrel, which inhabits the mountains, and the Eastern Gray and Eastern Fox squirrels, which are more commonly found in backyards throughout urban and city neighborhoods.
Tree squirrels feed on nuts, seeds, fruits, insects, greens, fungi and grains.
A litter of three to six are born in January or February. A second litter is born in May or June. The young are fully weaned at about three months of age. Squirrels build their nests of leaves and sticks. Urban squirrels have adapted well to palm trees as well, and weave a large nest from the palm fronds.