* Nuts and seeds: These are their primary food source, particularly acorns, walnuts, hickory nuts, and pine nuts.
* Fruits: They enjoy berries, apples, pears, and other fruits.
* Mushrooms: Certain species of squirrels will eat mushrooms.
* Insects: They may also eat insects, especially during the spring and summer.
* Eggs: Some squirrels will eat bird eggs.
* Small animals: In rare cases, squirrels may eat small animals like birds or rodents.
Their feeding habits are opportunistic, meaning they will take advantage of whatever food is readily available. They are also known to store food for later use, especially during the winter.