The African rail (''Rallus caerulescens'') is a small

wetland A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (anoxic) processes prevailing, especially in the soils. The p ...

bird of the rail family that is found in eastern and southern Africa.

Taxonomy

The African rail was formally described in 1789 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of

Carl Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his Nobility#Ennoblement, ennoblement in 1761 as Carl von Linné#Blunt, Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalise ...

's '' Systema Naturae''. He placed it with all the other rails in the

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

Rallus ''Rallus'' is a genus of wetland birds of the rail family. Sometimes, the genera ''Lewinia'' and ''Gallirallus'' are included in it. Six of the species are found in the Americas, and the three species found in Eurasia, Africa and Madagascar ar ...

'' and coined the binomial name ''Rallus caerulescens''. Gmelin based his description on the "blue necked rail" from the Cape of Good Hope that had been described in 1785 by the English ornithologist John Latham in his book ''A General Synopsis of Birds''. The naturalist Joseph Banks had provided Latham with a water-colour drawing of the rail by

Georg Forster Johann George Adam Forster, also known as Georg Forster (, 27 November 1754 – 10 January 1794), was a German naturalist, ethnologist, travel writer, journalist and revolutionary. At an early age, he accompanied his father, Johann Reinhold ...

who had accompanied James Cook on his second voyage to the Pacific Ocean. The picture was painted in 1773 at the Cape of Good Hope. It is now the

holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of sever ...

for the species and is held by the

Natural History Museum A natural history museum or museum of natural history is a scientific institution with natural history collections that include current and historical records of animals, plants, fungi, ecosystems, geology, paleontology, climatology, and more. ...

in London. The specific epithet ''caerulescens'' is from

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

and means "bluish". The species is

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispe ...

: no subspecies are recognised.

Description

Adults are long, and have mainly brown upperparts and blue-grey underparts, with black-and-white barring on the flanks and undertail. The sexes have similar plumage but the female is smaller. This is the only ''Rallus'' species with a plain back. The body is flattened laterally to allow easier passage through the reeds. They have long toes, a short tail and a long slim dull red bill. The legs are red. Immature birds are similar to the adults, but the blue-grey is replaced by buff. They are noisy

bird Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweig ...

s, with a trilled whistled ''treee-tee-tee-tee-tee'' call.

Distribution and habitat

Its breeding habitat is

marsh A marsh is a wetland that is dominated by herbaceous rather than woody plant species.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p Marshes can often be found a ...

es and reedbeds across eastern and southern

Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...

from

Ethiopia Ethiopia, , om, Itiyoophiyaa, so, Itoobiya, ti, ኢትዮጵያ, Ítiyop'iya, aa, Itiyoppiya officially the Federal Democratic Republic of Ethiopia, is a landlocked country in the Horn of Africa. It shares borders with Eritrea to the ...

South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. It is bounded to the south by of coastline that stretch along the Atlantic Ocean, South Atlantic and Indian Oceans; to the ...

. Many birds are permanent residents, but some undertake seasonal movements in response to the availability of wetland.

Behaviour

Breeding

The African rail nests in a dry location in marsh vegetation, both sexes building the cup nest. The typical clutch is 2–6 heavily spotted creamy-white eggs, which are incubated by both sexes for about 20 days to hatching. The precocial downy chicks are black, as with all rails.

Food and feeding

These birds probe with their bill in mud or shallow water, also picking up food by sight. They mainly eat

insect Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three ...

s, crabs and other small aquatic animals.

References

External links

* African rail �
Species text in The Atlas of Southern African Birds
{{Taxonbar, from=Q1082137 Rallus Birds of Africa Birds of Sub-Saharan Africa Birds described in 1789 Taxa named by Johann Friedrich Gmelin