Swamp Sparrow in Carondelet Park, St. Louis, Missouri (Image courtesy – Andy Reago and Chrissy McClarren, Wikimedia Commons)
Swamp sparrow in bird sanctuary in Alton Missouri (Image courtesy – Andy Reago and Chrissy McClarren, Wikimedia Commons)
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Photogallery - Swamp sparrows sing songs of their predecessors for centuries; indicates cultural learning