I went for a walk in the Arnold Arboretum yesterday to look for birds, my first such walk of the new year. The temperature was above freezing and many had come to sled and cross-country ski. I saw quite a few species near the Visitor Center. Among the birds I saw was this white-throated sparrow, all fluffed up to keep itself warm.
I also saw a couple of Carolina wrens, rustling at the base of the cattails in the meadow and visiting the birdfeeder.