There are 4 types of tree squirrels in The golden state (omitting the tiny nighttime flying squirrel, which is ruled out a bug). Of the 4 species, two are native as well as 2 are presented from the eastern part of the USA. In their all-natural habitats they consume a selection of foods, including a vast array of seeds such as ache acorns and nuts, fungis, pests, bird eggs, and young birds.