There are many little brown birds that visit feeders in winter. Some are sparrows, like the Song Sparrow above. Others are finches like the House Sparrow and the House Finch.
The most common sparrows are the Song Sparrow, Chipping Sparrow, Dark-eyed Junco, White-throated Sparrow and the American Tree Sparrow. If you learn those sparrows you can identify the most commonly seen sparrows in the eastern United States. All of these birds come to bird feeders. Of these five birds the Chipping Sparrow and the American Tree Sparrow look similar, both have rusty-red caps on their heads. But the American Tree Sparrow has a central spot on their un-streaked breast.
I don’t see many Song Sparrows in my garden, usually one or two looking for fallen seeds from the feeders the House Sparrows are dominating. But, listening to the soft peeps and low whistle of these little birds sounds hauntingly beautiful between the falling snowflakes.