It was once thought that swallows lived at the bottom of ponds during winter, re-emerging as spring arrived. It took a long time before we realised that they, and many other species of bird, fly south to warmer countries in order to escape the months when their primary source of food becomes scarce.
You're probably aware that dormice doze and hedgehogs hibernate their way through winter. But what of the butterflies and bees? The toads and the frogs? These are species that we share our world with but are unable to just skidaddle when the going gets tough. So how will they get through the winter months?