Why the grey squirrels have been more successful in the deciduous woodland?

Grey squirrels have been more successful in deciduous woodlands primarily due to their adaptability and foraging behavior. They are efficient at exploiting a wide range of food sources, including nuts, seeds, and fruits, which are abundant in these environments. Additionally, their ability to thrive in urban areas and their competitive edge over native species, like red squirrels, have contributed to their success in these habitats. Lastly, their reproductive rate and lack of natural predators in many areas further enhance their population growth in deciduous woodlands.