Please excuse the quality of these photos...this prothonotary warbler was not cooperating with me. They tend to move rather quickly along the waters edge, moving from branch to branch, foraging actively in low swampy foliage, looking under leaves for insects.
Prothonotary warblers breed across most of the midwestern and southeastern US. They are one of only a couple warbler species that nest in cavities.
Prothonotary warblers were on the Audubon 2007 watchlist. Studies have shown that its numbers are declining in several areas of its range.