I like that these pine cone are easily seen against the sky. The needles look like soft puff balls, even though we all know that pine needles aren't soft.
When the trees are bare of leaves, one of my favorite things to see are the squirrel nests. For those of you who didn't know what that dark blob is, it's a cluster of leaves and what not, built by a squirrel (or squirrels) to serve as a nest. I'm not sure if they use them in the Winter, but I know they build them in the Spring.