Little Wood Rail
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The little wood rail (''Aramides mangle'') is a species of
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 lightweigh ...
in the subfamily Rallinae of the rail, crake, and coot family
Rallidae The rails, or Rallidae, are a large cosmopolitan family of small- to medium-sized, ground-living birds. The family exhibits considerable diversity and includes the crakes, coots, and gallinules. Many species are associated with wetlands, althoug ...
. It is
endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...
to
Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...
.HBW and BirdLife International (2021) Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 6. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v6_Dec21.zip retrieved August 7, 2022


Taxonomy and systematics

The little wood rail 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 "unispec ...
.


Description

The little wood rail is long; one female weighed . It is the smallest member of genus ''Aramides''. The sexes are alike. They have a stout greenish bill with red at the base of the
maxilla The maxilla (plural: ''maxillae'' ) in vertebrates is the upper fixed (not fixed in Neopterygii) bone of the jaw formed from the fusion of two maxillary bones. In humans, the upper jaw includes the hard palate in the front of the mouth. The t ...
and red legs and feet. Adults have a gray head, neck, and upper back, and the rest of the back and their wings are olive brown to greenish olive. Their rump, tail, and undertail
coverts A covert feather or tectrix on a bird is one of a set of feathers, called coverts (or ''tectrices''), which, as the name implies, cover other feathers. The coverts help to smooth airflow over the wings and tail. Ear coverts The ear coverts are sm ...
are black. Their throat is white and their breast and belly rufous.Taylor, B., A. Bonan, P. F. D. Boesman, and E. de Juana (2020). Little Wood-Rail (''Aramides mangle''), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.liwrai1.01 retrieved October 14, 2022


Distribution and habitat

The little wood rail is found in Brazil from northeastern
Pará Pará is a Federative units of Brazil, state of Brazil, located in northern Brazil and traversed by the lower Amazon River. It borders the Brazilian states of Amapá, Maranhão, Tocantins (state), Tocantins, Mato Grosso, Amazonas (Brazilian state) ...
south along the coast to
São Paulo São Paulo (, ; Portuguese for 'Saint Paul') is the most populous city in Brazil, and is the capital of the state of São Paulo, the most populous and wealthiest Brazilian state, located in the country's Southeast Region. Listed by the GaWC a ...
state and somewhat inland in the northeast. It has also been documented as a
vagrant Vagrancy is the condition of homelessness without regular employment or income. Vagrants (also known as bums, vagabonds, rogues, tramps or drifters) usually live in poverty and support themselves by begging, scavenging, petty theft, temporar ...
in
French Guiana French Guiana ( or ; french: link=no, Guyane ; gcr, label=French Guianese Creole, Lagwiyann ) is an overseas departments and regions of France, overseas department/region and single territorial collectivity of France on the northern Atlantic ...
.Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 24 July 2022. Species Lists of Birds for South American Countries and Territories. https://www.museum.lsu.edu/~Remsen/SACCCountryLists.htm retrieved July 24, 2022 The species mostly inhabits coastal swamps and lagoons including
mangrove forest Mangrove forests, also called mangrove swamps, mangrove thickets or mangals, are productive wetlands that occur in coastal intertidal zones. Mangrove forests grow mainly at tropical and subtropical latitudes because mangroves cannot withstand fr ...
. Inland it is found in ''
caatinga Caatinga (, ) is a type of semi-arid tropical vegetation, and an ecoregion characterized by this vegetation in interior northeastern Brazil. The name "Caatinga" is a Tupi word meaning "white forest" or "white vegetation" (''caa'' = forest, v ...
'', a rather dry biome.


Behavior


Movement

The little wood rail is resident along the coast. It occurs irregularly in the inland ''caatinga'', movements which appear to be range extensions and contractions rather than true migration.


Feeding

Almost nothing is known about the little wood rail's foraging behavior or diet. It has been observed probing mud and holding a crab.


Breeding

The little wood rail has been recorded breeding between May and July in the ''caatinga'' and between October and November in the coastal southern part of its range. The few known nests were cups of sticks, grass, and dead leaves with clutches of five or six eggs. Nothing else is known about the species' breeding biology.


Vocalization

The little wood rail's apparent song is a " netrating, loud 'pik-pik-pik' or 'pyok-pyok-pyok...'". Members of a pair often reply to each other at slightly different pitches.


Status

The
IUCN The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...
has assessed the little wood rail as being of Least Concern, though its population size and trend are unknown. No immediate threats have been identified. However, "In view of its potentially restricted distribution, the almost total lack of knowledge about its natural history, and the possibility of threats to its wetland habitats hespecies should at least be considered Data Deficient and worthy of urgent investigation."


References


External links

*Associação Mãe-da-lu
Little Wood-Rail (Aramides mangle)
- Photos, sounds, notes {{Taxonbar, from=Q1259592 Aramides Birds of the Atlantic Forest Birds of the Caatinga Endemic birds of Brazil Birds described in 1825 Taxonomy articles created by Polbot