Here's a breakdown:
* Eastern Gray Squirrels: They usually have two litters per year, one in late winter/early spring (February-March) and another in late spring/early summer (May-June).
* Fox Squirrels: Their breeding season is similar to gray squirrels, with litters born from February to July.
* Red Squirrels: They can have two litters per year, but the timing can vary depending on location and climate. The first litter is usually born in April/May, and the second in July/August.
Keep in mind that these are just general guidelines. The actual timing of squirrel births can vary depending on factors such as location, climate, and food availability.