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Fall Warblers and Flycatchers Challenge Wisconsin Birders
In western Wisconsin late August to September brings a flood of small migrants including up to 11 flycatchers, five thrush-like species, vireos, sparrows and 30 potential varieties. The author argues fall flycatchers are the hardest to ID, outlines tricks: vertical perch, size, light eye rings, buff underparts, wing bars, and the role of calls. The Tennessee warbler is highlighted as the key to full warbler identification, with warblers and vireos offering distinct cues and calls for proper separation.
MENTIONED IN THIS ARTICLE
Wisconsin
Madison
U.S