Eastern Gray Squirrel
The eastern gray squirrel, or grey squirrel (depending on region), (Sciurus carolinensis), is a tree squirrel in the genus Sciurus native to the eastern and midwestern United States, and to the southerly portions of the eastern provinces of Canada.
A prolific and adaptable species, the eastern gray squirrel has been introduced to, and thrives, in several regions of the western United States. It has also been introduced to Britain, where it has spread across the country and has largely displaced the native red squirrel, Sciurus vulgaris. In Ireland, the red squirrel has been displaced in several eastern counties, though it still remains common in the south and west of the country. There are concerns that such displacement might happen in Italy and that gray squirrels might spread from Italy to other parts of mainland Europe.
Eastern gray squirrels breed twice a year, December to February and May to June, though this is slightly delayed in more northern latitudes. The first litter is born in February to March, the second in June to July. There are normally two to six young in each litter, but this number can be as high as 8. The gestation period is about 44 days. The young are weaned at 7 weeks and leave the nest after 10 weeks.
Source: en.wikipedia.org/wiki/Eastern_gray_squirrel – 30.12.2008