Some, like the snowshoe hare or short-tailed weasel, turn white in the winter for camouflage. Chickadees and goldfinches double the amount of feathers they carry to help with insulation.

That’s because the leaves on this amazing little tree are so heavily dissected they look more like feathers than foliage. In spring, the leaves emerge velvet pink; then mature to deep green as ...

Identifying deciduous trees in summer is simple; just look at the leaves. But what clues help you recognize a leafless tree in winter? If you have a twig with a couple of leaf scars and a few buds ...