Alan Murphy/ BIA / Marsh Wren (Cistothorus palustris) calling, British Columbia, Canada

Alan Murphy / Marsh Wren (Cistothorus palustris) calling, British Columbia, Canada

Alan Murphy / Marsh Wren (Cistothorus palustris) calling, British Columbia, Canada

Alan Murphy / Marsh Wren (Cistothorus palustris) calling from cattail, British Columbia, Canada

Shattil & Rozinski / Longbilled marsh wren {Cistothorus palustris} singing on bullrushes while 'doing the splits', Colorado, USA

Donald M. Jones / Marsh Wren (Cistothorus palustris) male calling, Montana

Alan Murphy/ BIA / Marsh Wren (Cistothorus palustris) calling from cattail, British Columbia, Canada

Alan Murphy/ BIA / Marsh Wren (Cistothorus palustris) calling, British Columbia, Canada

Alan Murphy/ BIA / Marsh Wren (Cistothorus palustris) calling, British Columbia, Canada

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

Robert Royse / Marsh Wren (Cistothorus palustris), Ohio

Glenn Bartley / Marsh Wren (Cistothorus palustris), British Columbia, Canada

Loic Poidevin / Longbilled marsh wren (Cistothorus palustris) Quebec, Canada, May

Loic Poidevin / Longbilled marsh wren (Cistothorus palustris) singing on bullrush, Quebec, Canada, May

Loic Poidevin / Longbilled marsh wren (Cistothorus palustris) profile portrait, Quebec, Canada, May

Loic Poidevin / Eurasian Wren (Troglodytes troglodytes) perched. The Vendeen Marsh, French Atlantic Coast, January.

Gerrit Vyn / Marsh Wren (Cistothorus palustris) singing. Snohomish County, Washington, USA, April.

Gerrit Vyn / Marsh Wren (Cistothorus palustris) singing. Snohomish County, Washington, USA, April.

Gerrit Vyn / Marsh Wren (Cistothorus palustris) displaying. Snohomish County, Washington, USA, April.

Pete Oxford / Grass / Short-billed Marsh Wren (Cistothorus platensis falklandicus) Singing in long grass. This species in endemic, and is the smallest of the resident birds. Sea Lion Island. South of mainland east...

Pete Oxford / Grass / Short-billed Marsh Wren (Cistothorus platensis falklandicus) Singing in long grass. This species in endemic, and is the smallest of the resident birds. Sea Lion Island. South of mainland east...

Donald M. Jones / Marsh Wren (Cistothorus palustris) singing from cattail, western Montana

Donald M. Jones / Marsh Wren (Cistothorus palustris) perched on cattail, western Montana

Donald M. Jones / Marsh Wren (Cistothorus palustris) singing from cattail, western Montana

Donald M. Jones / Marsh Wren (Cistothorus palustris) singing from cattail, western Montana

Donald M. Jones / Marsh Wren (Cistothorus palustris) singing from cattail, western Montana

Donald M. Jones / Marsh Wren (Cistothorus palustris) singing from cattail, western Montana

Donald M. Jones / Marsh Wren (Cistothorus palustris) singing from cattail, western Montana

Shattil & Rozinski / Longbilled marsh wren {Cistothorus palustris} nest material from Cattail reed, USA

Nigel Bean / Longbilled marsh wren {Cistothorus palustris} on bullrush, California, USA

Tom Vezo / Marsh Wren (Cistothorus palustris) singing from perch, Long Island, New York

Thomas Mangelsen / Marsh Wren (Cistothorus palustris) singing while perching on a Common Cattail (Typha latifolia), Bear River Migratory Bird Refuge, Utah

Tom Vezo / Marsh Wren (Cistothorus palustris) parent at nest with chicks, Long Island, New York

Tim Fitzharris / Marsh Wren (Cistothorus palustris) singing while perching on a Common Cattail (Typha latifolia), Alberta, Canada

Tim Fitzharris / Marsh Wren (Cistothorus palustris) singing while perching on a Common Cattail (Typha latifolia), North America

Nigel Bean / Longbilled marsh wren singing from top of bullrush. California, USA.

Donald M. Jones / Marsh Wren (Cistothorus palustris) male calling, Montana

Alan Murphy/ BIA / Marsh Wren (Cistothorus palustris) collecting nesting material from cattail, British Columbia, Canada

Alan Murphy/ BIA / Marsh Wren (Cistothorus palustris) at nest in reeds, British Columbia, Canada

Donald M. Jones / Marsh Wren (Cistothorus palustris) perched on cattail, western Montana

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

Marie Read / Marsh wren (Cistothorus palustris) singing from cattail perch in marsh, Bear River Migratory Bird Refuge, Utah, USA, May.