Why is winter such a tough time and testing time for our wildlife?

Winter is a season of extreme, plummeting temperatures. Frost and snow means that food and water are in short supply. For wildlife its a real test of the fittest, right now animals and plants are facing up to this challenge, especially young animals that haven`t` experienced these sort of conditions before. But they have some clever strategies to see them through. Some migrate, some hibernate, some take on fat supplies and others store food. Its a time of remarkable behaviour. Winter also supplies some of the United Kingdoms most spectacular wildlife spectacles, for us it can be beautiful, but this is the most difficult time for every plant and animal.