Black Tern Chlidonias niger Horicon National Wildlife Refuge, Fond du Lac Co., Wisconsin July
Black Tern Chlidonias niger Horicon National Wildlife Refuge, Fond du Lac Co., Wisconsin July
Black Tern Chlidonias niger Horicon National Wildlife Refuge, Fond du Lac Co., Wisconsin June
Black Tern Chlidonias niger Horicon National Wildlife Refuge, Fond du Lac Co., Wisconsin June