In the United Kingdom, gray squirrels are an exotic species, first introduced in the 1870s. While the gray squirrel population has grown to an estimated 2.7 million, native red squirrels have declined ...

Gray squirrels in the U.K. may soon be given oral birth control medication in an attempt to keep the invasive species at bay, as part of a government plan. Gray squirrels, the common bushy-tailed ...

Add Yahoo as a preferred source to see more of our stories on Google. The government is supporting research into a contraceptive "pill" for grey squirrels to curb the damage these rodents inflict on ...