American Beech Trees
Most deciduous trees drop all of their leaves in the fall but there are some exceptions. American Beech trees' leaves turn yellow in the fall, but they don't always drop all of them, particularly with younger trees. They can be quite striking in the winter. Often, they are surounded by larger bare trees, and they stand out in stark contrast.
Beech trees aren't the only trees that reatin leaves in the winter. Many oak trees also hold onto leaves in the winter. Beech trees have football shaped leaves, so they are pretty easy to differentiate from oak trees.
If you ever walk throught the forest in the winter and wonder what that tree is with all the dead leaves on it, it is most likely an American Beech.