Ashley Cooper / Warning sign about the presence of Argentinian mines on the Falkands, February 2014.

Glenn Bartley/ BIA / Sedge Wren (Cistothorus platensis) calling, Falkland Islands

Ole Jorgen Liodden / Sedge wren (Cistothorus platensis hornensis) Ushuaia, Argentina, February.

Alan Murphy / Sedge Wren (Cistothorus platensis) perching on cattail, Texas

Robert Royse / Sedge Wren (Cistothorus platensis) singing, Ohio

Robert Royse / Sedge Wren (Cistothorus platensis) singing, Minnesota

Robert Royse / Sedge Wren (Cistothorus platensis), North Dakota

Glenn Bartley / Sedge Wren (Cistothorus platensis) singing, Manitoba, Canada

Gerrit Vyn / Sedge Wren (Cistothorus platensis) camouflaged and perched on dry foliage, Alberta, Canada. May.

Marie Read / Sedge / Grass Wren (Cistothorus platensis), singing, Gouverneur, New York, USA

Murray Cooper / Sedge Wren (Cistothorus platensis) calling, Andes, Ecuador

Marie Read / Male Sedge wren (Cistothorus platensis) perched in Willow (Salix sp) tree, singing to attract mate, Stutsman County, North Dakota, USA. June.