Squirrels are active during the day. Normally, you can see them on the ground foraging for food. They do not hibernate, but will normally spend long hours in their nest during the cold winter months. Squirrels are extremely vocal, they possess a vocal range that helps them communicate. Most of the sounds they make are considered an alarm call. Squirrels make them when they perceive a threat, it may sound like a bark, scream, chirp, or moan. They also communicate by flipping and flicking their tail around. Studies show that there are 2 separate types of alarm calls, one for an aerial threat, the other for a ground threat.
Squirrels are omnivores, but they mostly eat plants, nuts, seeds, fungi, and fruits. Occasionally, they will eat insects, eggs, and even small snakes.