>>14155206>>14156888Red squirrels are smaller and more adapted for colder climates compared to grey squirrels. I'm not exactly saying it's climate change, though rather the expansion of urban centres creates a warmer environment which red squirrels aren't attracted to but grey squirrels are. The grey squirrels thrive and the red squirrels end up living on the fringes and up north.
Yeah, you could arguably also pin the blame fo urban expansion in the UK on immigrants.