The only Warbler species in the U. S. that is a cavity nester – the Prothonotary Warbler (Protonotaria citrea) – nested in one of my Eastern Bluebird boxes this year in North Central Alabama.

Its one and only brood successfully fledged five young. It is the first time in seven years of my “Help! Bring Back the Bluebird” program that this beautiful “Swamp” Warbler has occupied one of my nest boxes. This represents hundreds of box nestings in both Illinois and Alabama. My four trails this year total 135 boxes. They are located in both Jefferson and Shelby counties nearing Birmingham, wyth most boxes in Oak Mountain State Park.