How big is a squirrel when it leaves nest?

Squirrels typically leave the nest when they are around 10-12 weeks old. At this age, they are:

* Fully furred and weaned: They no longer depend on their mother for milk.

* Capable of foraging and climbing: They can find their own food and navigate trees.

* Independent: They are ready to live on their own.

Size at this age:

* Eastern Gray Squirrel: About 10-12 inches long, with a bushy tail of the same length.

* Fox Squirrel: Similar in size to the Eastern Gray.

* Red Squirrel: Smaller, about 8-10 inches long.

Note: These are just general estimates. The exact age and size at which squirrels leave the nest can vary depending on the species, the availability of food, and other environmental factors.