We suffer some in UK from introduced species from USA. "American Flag"/Signal Crayfish being one that's out-competed native species. Others include grey squirre

We suffer some in UK from introduced species from USA. "American Flag"/Signal Crayfish being one that's out-competed native species. Others include grey squirrels, bullfrogs, and apparently mink. https://www.discoverwildlife.com/animal-facts/facts-about-uk-invasive-species/ https://www.discoverwildlife.com/animal-facts/facts-about-uk...