I banded this Black-throated Green Warbler on 25 August 2016. In the spring, this warbler’s black throat contrasts sharply with its golden face. Even in the fall, this bird is striking. The eastern ranging Black-throated Green Warbler is similarly plumaged to a number of western species (Golden-cheeked, Hermit, Townsend’s warblers). These species seem to be closely related. Their ancestors may have been a single population that became fragmented and isolated by Pleistocene glaciations (Morse and Poole 2005). In any event, Black-throated Green Warblers, which breed in northern and Appalachian forests, are one of our most common warblers.