american squirrel vs enlglish squirrel

american squirrel:
the easter gray squirrel has been introcude to Britan where it has spread across the country and has largely displaced the native red squirrel.
english squirrel:
the red squirrel or eurasian red is an arboreal omnivorous rodent
in great britain and ireland numbers have decreased drastically in recent years ,in part because
of the introduction of the easter grey squirrel from north america