What might happen to the animals in a deciduous forest if winter lasted a whole year?

Most times, the average temperature in a deciduous forest is around 50*. This allows for a change of seasons. The animals in this forest adapt and depend on a change of seasons. If winter lasted an entire year, all of the plants and trees would lose their leaves for that year. This would cause the animals to lose shelter and cover they seek from these plants. Animals would also lose any food they depend on from those plants. SO, the animals in that deciduous forest would probably die if winter lasted an entire year.