For many years poplulations of this bird were declining. In recent years, however, it has been experiencing a resurgence. This is due in no small part to agressive conservation programs that have placed bluebird nesting boxes in proper habitat. I saw my first Eastern Bluebird in Glacial Park just outside of Ringwood, IL, and now see them quite often when I venture out of the city. Bluebirds are considered thrushes along with robins, the spotted thrushes(Hermit Thrush, Wood Thrush, and Townshend's Solitaire amongst other species.