The marsh wren (''Cistothorus palustris'') is a small

North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...

songbird A songbird is a bird belonging to the suborder Passeri of the perching birds (Passeriformes). Another name that is sometimes seen as the scientific or vernacular name is Oscines, from Latin ''oscen'', "songbird". The Passeriformes contains 5,00 ...

of the

wren Wrens are a family, Troglodytidae, of small brown passerine birds. The family includes 96 species and is divided into 19 genera. All species are restricted to the New World except for the Eurasian wren that is widely distributed in the Old Worl ...

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

. It was formerly called the long-billed marsh wren to distinguish it from the

sedge wren The sedge wren (''Cistothorus stellaris'') is a small and secretive passerine bird in the family Wren, Troglodytidae. It is widely distributed in North America. It is often found in wet grasslands and meadows where it nests in the tall grasses an ...

, then known as the short-billed marsh wren.

Taxonomy

The marsh wren was described by the Scottish-American ornithologist Alexander Wilson in 1810 and given the

binomial name In taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, altho ...

''Certhia palustris''. The current

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

Cistothorus ''Cistothorus'' is a genus of small passerine birds in the family Troglodytidae. Taxonomy The genus ''Cistothorus'' was circumscribed by the German ornithologist Jean Cabanis in 1850. The type species is the sedge wren (''Cistothorus stellari ...

'' was introduced by the German ornithologist

Jean Cabanis Jean Louis Cabanis (8 March 1816 – 20 February 1906) was a German ornithologist. He worked at the bird collections of the Natural History Museum in Berlin becoming its first curator of birds in 1850. He founded the ''Journal für Ornithologie ...

in 1850. There are 15 recognised

subspecies In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morpholog ...

. Etymology: from Greek 'κιστος' (''cistos'', "a shrub") and 'θουρος' (''thouros'', "leaping, or running through") and Latin 'palustris' ("marshy").

Description

Adults have brown upperparts with a light brown belly and flanks and a white throat and breast. The back is black with white stripes. They have a dark cap with a white line over the eyes and a short thin bill. The male's song is a loud gurgle used to declare ownership of territory; western males have a more varied repertoire. This little bird is native to Canada, Mexico, and the United States. Their breeding habitat is

marsh In ecology, a marsh is a wetland that is dominated by herbaceous plants rather than by woody plants.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p More in genera ...

es with tall vegetation such as

cattail ''Typha'' is a genus of about 30 species of monocotyledonous flowering plants in the family Typhaceae. These plants have a variety of common names, in British English as bulrushStreeter D, Hart-Davies C, Hardcastle A, Cole F, Harper L. 2009. ...

s across

. In the western United States, some birds are permanent residents. Other birds

migrate Migration, migratory, or migrate may refer to: Human migration * Human migration, physical movement by humans from one region to another ** International migration, when peoples cross state boundaries and stay in the host state for some minimum le ...

to marshes and salt marshes in the southern United States and

Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...

. Their non-breeding range is in the southern United States going into Mexico and their breeding range is in the northeastern United States going into Canada. Measurements: * Length: * Weight: * Wingspan:

Foraging and diet

These birds forage actively in vegetation close to the water, occasionally flying up to catch

insect Insects (from Latin ') are Hexapoda, hexapod invertebrates of the class (biology), class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (Insect morphology#Head, head, ...

s in flight. They mainly eat insects, also

spider Spiders (order (biology), order Araneae) are air-breathing arthropods that have eight limbs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude spider silk, silk. They are the largest order of arachnids and ran ...

s and

snail A snail is a shelled gastropod. The name is most often applied to land snails, terrestrial molluscs, terrestrial pulmonate gastropod molluscs. However, the common name ''snail'' is also used for most of the members of the molluscan class Gas ...

s. In California, 53 Western Marsh Wren stomachs were examined which showed that the birds consume bugs (29%), caterpillars and chrysalids (17%), beetles (16%), ants and wasps (8%), spiders (5%), carabids and coccinellids (2%), with various other flies, grasshoppers, dragonflies and unidentifiable insect remains making up over 11 percent. Ants and wasps were observed to be mostly eaten in the fall.

Nesting

The

nest A nest is a structure built for certain animals to hold Egg (biology), eggs or young. Although nests are most closely associated with birds, members of all classes of vertebrates and some invertebrates construct nests. They may be composed of ...

is an oval structure attached to marsh vegetation, entered from the side. The male builds many unused nests in his territory. A hypothesis of the possible reason to why males build multiple "dummy" nests in their territory is that they are courting areas and that the females construct the "breeding nest" in which she lays her eggs. He may puncture the eggs and fatally peck the nestlings of other birds nesting nearby, including his own species (even his own offspring) and

red-winged blackbird The red-winged blackbird (''Agelaius phoeniceus'') is a passerine bird of the family Icteridae found in most of North America and much of Central America. It breeds from Alaska and Newfoundland south to Florida, the Gulf of Mexico, Mexico, and ...

yellow-headed blackbird The yellow-headed blackbird (''Xanthocephalus xanthocephalus'') is a medium-sized blackbird with a yellow head. It is the only member of the genus ''Xanthocephalus''. Their scientific name derives from the Greek word for yellow, ''xanthous'', a ...

s, and

least bittern The least bittern (''Botaurus exilis'') is a small heron, the smallest member of the family Ardeidae found in the Americas. This species was formerly placed in the genus ''Ixobrychus''. Taxonomy The least bittern was Species description, forma ...

s. The

clutch A clutch is a mechanical device that allows an output shaft to be disconnected from a rotating input shaft. The clutch's input shaft is typically attached to a motor, while the clutch's output shaft is connected to the mechanism that does th ...

is normally four to six

egg An egg is an organic vessel grown by an animal to carry a possibly fertilized egg cell (a zygote) and to incubate from it an embryo within the egg until the embryo has become an animal fetus that can survive on its own, at which point the ...

s, though the number can range from three to 10. The eggs are usually 0.6-0.7 inches in length and 0.4-0.6 inches in width. Incubation is performed only by females, and only females develop a brood patch. Marsh wren young can get infected by pathogenic larvae.Warren, Yvonne. "Protocalliphora Braueri (Diptera: Calliphoridae) Induced Pathogenesis in a Brood of Marsh Wren (''Cistothorus Palustris'') Young". ''Journal of Wildlife Diseases'', 17 Mar. 1993, . The Blowfly larvae infect the young by subdermal myiasis-induced lesions and subsequent sepsis. The larvae form a wound in the young by rasping and expanding a hole in their skin to create blood flow and feed on the blood of the hosts' body.

Conservation

The species is still common with an estimated global breeding population of 9.4 million. However, its numbers have declined with the loss of suitable wetland habitat and wholesale draining of marshes will lead to

local extinction Local extinction, also extirpation, is the termination of a species (or other taxon) in a chosen geographic area of study, though it still exists elsewhere. Local extinctions are contrasted with extinction, global extinctions. Local extinctions ...

. Still, the

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

is widespread enough not to qualify as threatened according to the

IUCN The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the status ...

Gallery

File:MarshWrenTuleLake.jpg, Marsh wren at Tule Lake National Wildlife Refuge, California File:Cistothorus palustris Iona.jpg, In Iona, British Columbia, Canada File:100 Marsh Wren cropped.jpg, Nest, illustration File:Museum of Science, Boston, MA - IMG 3236.JPG, Eggs

References

Citations

General sources

* Henninger, W. F. (1906): "A preliminary list of the birds of Seneca County, Ohio". '' Wilson Bull.'' 18(2): 47–60
DjVu full textPDF full text
* Warren, Yvonne. "''Protocalliphora Braueri'' (Diptera: Calliphoridae) Induced Pathogenesis in a Brood of Marsh Wren (Cistothorus Palustris) Young". ''Journal of Wildlife Diseases'', 17 Mar. 1993. .

External links

��USGS Patuxent Bird Identification InfoCenter * * * {{Taxonbar, from=Q1379530

marsh wren The marsh wren (''Cistothorus palustris'') is a small North American songbird of the wren Family (biology), family. It was formerly called the long-billed marsh wren to distinguish it from the sedge wren, then known as the short-billed marsh wren ...

Birds of North America

Taxa named by Alexander Wilson (ornithologist)