Nava's wren (''Hylorchilus navai'') is a species of

bird Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a fou ...

in the family Troglodytidae. It is

endemic Endemism is the state of a species being found only 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 foun ...

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 ...

Taxonomy and systematics

Nava's wren was originally treated as a subspecies of ''Hylorchilus sumichrasti'', which at that time was called slender-billed wren. After the split, the now-

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 "unisp ...

''H. sumichrasti'' was renamed

Sumichrast's wren Sumichrast's wren (''Hylorchilus sumichrasti''), also known as the slender-billed wren, is a species of bird in the family Troglodytidae. It is endemic to Mexico. Taxonomy and systematics Sumichrast's wren is monotypic. A former subspecies, ...

. Nava's wren is also monotypic.Kroodsma, D. E. and D. Brewer (2020). Nava's Wren (''Hylorchilus navai''), 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.navwre1.01 retrieved June 2, 2021

Description

Nava's wren is long; a female weighed . The adults have a rich brown crown and upperparts and a tawny face. Their throat and upper chest are whitish that transitions to pale gray on the lower chest and gray-brown at the vent. The lower chest has faint scalloping and the flanks are sooty brown.

Distribution and habitat

Nava's wren occurs in a small area of southern Mexico, in southeastern

Veracruz Veracruz, formally Veracruz de Ignacio de la Llave, officially the Free and Sovereign State of Veracruz de Ignacio de la Llave, is one of the 31 states which, along with Mexico City, comprise the 32 Political divisions of Mexico, Federal Entit ...

, western

Chiapas Chiapas, officially the Free and Sovereign State of Chiapas, is one of the states that make up the Political divisions of Mexico, 32 federal entities of Mexico. It comprises Municipalities of Chiapas, 124 municipalities and its capital and large ...

, and barely into northeastern

Oaxaca Oaxaca, officially the Free and Sovereign State of Oaxaca, is one of the 32 states that compose the political divisions of Mexico, Federative Entities of the Mexico, United Mexican States. It is divided into municipalities of Oaxaca, 570 munici ...

. It inhabits undisturbed forest with outcrops of

Karst Karst () is a topography formed from the dissolution of soluble carbonate rocks such as limestone and Dolomite (rock), dolomite. It is characterized by features like poljes above and drainage systems with sinkholes and caves underground. Ther ...

limestone between the elevations of .

Behavior

Feeding

Though no dietary data are available for Nava's wren, it probably feeds mostly or entirely on invertebrates. It forages on the ground, especially among rocks and on rock faces.

Breeding

The breeding

phenology Phenology is the study of periodic events in biological life cycles and how these are influenced by seasonal and interannual variations in climate, as well as habitat factors (such as elevation). Examples include the date of emergence of leav ...

of Nava's wren has not been documented.

Vocalization

The male Nava's wren sings "a varied, often stuttering warble of mellow whistles

The female's song is "an introductory note followed by rapid series of 8 or more loud whistles

The species' call is "a metallic 'tink'

Status

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 ...

has assessed Nava's wren as Vulnerable "owing to its small and declining range" and that its population is estimated to be fewer than 7000 adults.

References

External links

BirdLife Species Factsheet.
{{Taxonbar, from=Q2225237 Nava's Wren Endemic birds of Southern Mexico Nava's wren Taxonomy articles created by Polbot