279 species of squirrel worldwide including tree squirrels, ground squirrels, and flying squirrels. 8 species are found in Michigan.
On average, our backyard squirrels eat about 1-2 pounds of food per week. They eat much more than nuts. Squirrels are omnivores and eat fungi, seeds, nuts and fruits, as well as eggs, small insects, caterpillars, and small animals.
Squirrels plan ahead and bury nuts and seeds at various locations and return to them throughout the year when food is scarce. They put on elaborate bogus food burying displays to deceive onlookers.
Tree-dwelling squirrels such as the grey squirrel live in tree hollows, bird houses or build dreys (similar to bird’s nests) made of twigs high in trees. They are lined with grass, bark, moss and feathers for added comfort and insulation.
Although a single male can fertilize an entire litter, usually there is varying paternity, so a single litter could have multiple fathers. A typical grey squirrel litter consists of four offspring born about an inch long, naked, with closed eyes and ears.
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