Stresemann's bristlefront

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Stresemann's bristlefront
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Rhinocryptidae
Genus: Merulaxis
Species:
M. stresemanni
Binomial name
Merulaxis stresemanni
Sick, 1960
Merulaxis stresemanni map.svg

Stresemann's bristlefront (Merulaxis stresemanni) is a critically endangered species of bird in the family Rhinocryptidae, the tapaculos. It is endemic to Brazil. [2] [1]

Contents

Taxonomy and systematics

Stresemann's bristlefront and the slaty bristlefront (Merulaxis ater) form a superspecies, and the two might actually be one species. It has no subspecies. It is known only from three specimens and a few photographs, audio recordings, and sight records. [3] [4]

Description

Stresemann's bristlefront is a medium-sized, long-tailed bird with distinctive forehead bristles. It measures 20 cm (7.9 in) long. The male is all slaty gray with a dark rufous-chestnut rump, uppertail-coverts, and vent. The namesake features are long, pointed bristles on the forehead. The female is cinnamon-brown above, with a duskier tail, and is bright cinnamon below. [5]

Distribution and habitat

Stresemann's bristlefront's natural habitat is subtropical or tropical moist lowland forest. It is threatened by habitat loss, and the Mata do Passarinho Reserve is the last known area to house Stresemann's bristlefront. The Atlantic forest reserve is in the states of Minas Gerais and Bahia and contains primary forest as well as secondary forest, and is an island of forest surrounded by farmland. [6]

Behavior

Feeding

A Stresemann's bristlefront was observered "foraging on the ground and on fallen tree trunks in an area of drier forest between two humid valleys". It has been seen to feed on insects. [5]

Breeding

The first known Stresemann's bristlefront nest site was a tunnel estimated to be 6 ft (1.8 m) long. The nest itself was not described. [5]

Vocalization

The Stresemann's bristlefront song starts with clicks followed by a trill. It is similar to that of the closely related slaty bristlefront but lower pitched. It readily responds to playback. [4]

Status

The Stressemann's bristlefront is one of the rarest birds on earth. The IUCN has assessed it as Critically Endangered. An extensive search was performed in 2019, and the species was last seen in a tiny forest remnant, now set aside as the Mata do Passarinho Reserve. The IUCN believes that fewer than 50 mature individuals survive. [1] "The species' known range is tiny (35 km2 (14 sq mi))...and the little remaining forest is disappearing rapidly; although this species is legally protected, there seems little hope for its survival." [4]

Related Research Articles

Tapaculo Family of birds

The tapaculos or tapacolos are a family, Rhinocryptidae, of small suboscine passerine birds, found mainly in South America and with the highest diversity in the Andean regions. Three species are found in southern Central America.

Slaty bristlefront Species of bird

The slaty bristlefront is a member of the Neotropical bird family Rhinocryptidae, the tapaculos. It is endemic to south-east Brazil.

Slaty-tailed trogon Species of bird

The slaty-tailed trogon is a near passerine bird in the family Trogonidae, the quetzals and trogons. It is found in Mexico, throughout Central America, and in Colombia and Ecuador.

Rufous motmot Species of bird

The rufous motmot is a near-passerine bird in the family Momotidae. It is found from northeastern Honduras south to western Ecuador, northern Bolivia, and western Brazil.

Golden-bellied starfrontlet Species of hummingbird

The golden-bellied starfrontlet is a species of hummingbird in the "brilliants", tribe Heliantheini in subfamily Lesbiinae. It is found in Colombia and Venezuela.

Buff-winged starfrontlet Species of hummingbird

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Hook-billed hermit Species of hummingbird

The hook-billed hermit is an threatened species of hummingbird in the family Trochilidae. It is endemic to a small area of Brazil.

Grey-chinned hermit Species of hummingbird

The grey-chinned hermit is a species of hummingbird in the family Trochilidae. It is found in Brazil, Colombia, Ecuador, Peru, and Venezuela.

Glaucous-blue grosbeak Species of bird

The glaucous-blue grosbeak, also known as the indigo grosbeak, is a species of bird in the family Cardinalidae, the cardinals or cardinal grosbeaks. It is found in Brazil, Argentina, Paraguay, and Uruguay.

Maroon-chested ground dove Species of bird

The maroon-chested ground dove is a species of bird in the family Columbidae. It is found in Bolivia, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Panama, Peru, and Venezuela.

Cabaniss seedeater Species of bird

The Cabanis's seedeater is a species of bird in the cardinal family Cardinalidae that the International Ornithological Committee (IOC) accepted as a species in 2015. It is found southern Mexico and Central America.

<i>Merulaxis</i> Genus of birds

Merulaxis is a genus of bird in the family Rhinocryptidae. It contains the following species:

Atlantic royal flycatcher Species of bird

The Atlantic royal flycatcher is a passerine bird in the family Tityridae according to the International Ornithological Committee (IOC). It is endemic to Brazil.

White-breasted tapaculo Species of bird

The white-breasted tapaculo is a species of bird in the family Rhinocryptidae. It is endemic to the Atlantic forest of southeastern Brazil.

Bahia tapaculo Species of bird

The Bahia tapaculo is a species of bird in the family Rhinocryptidae. It is endemic to lowland Atlantic forest in Bahia, Brazil.

Dusky-backed jacamar Species of bird

The dusky-backed jacamar is a species of bird in the family Galbulidae. It is found in Colombia and Panama.

Black-tailed trogon Species of bird

The black-tailed trogon is a species of bird in the family Trogonidae, the quetzals and trogons. It is found Panama and northern South America.

Una Biological Reserve is a Biological reserve in Brazil.

Inagua woodstar Species of hummingbird

The Inagua woodstar, also called the lyre-tailed hummingbird, is a species of hummingbird in tribe Mellisugini of subfamily Trochilinae, the "bee hummingbirds". It is endemic to the two islands of the Inagua district of the Bahamas.

The Mata do Passarinho Reserve is an Atlantic Forest nature reserve in the Brazilian states of Minas Gerais and Bahia. The reserve is the last known area to contain Stresemann's bristlefront, a bird which is endemic to Brazil and listed as critically endangered by the International Union for Conservation of Nature (IUCN).

References

  1. 1 2 3 BirdLife International (2018). "Stresemann's bristlefront Merulaxis stresemanni". IUCN Red List of Threatened Species . 2018. Retrieved 13 July 2021.
  2. Gill, F.; Donsker, D.; Rasmussen, P. (January 2021). "IOC World Bird List (v 11.1)" . Retrieved January 14, 2021.
  3. 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 19 January 2021. A classification of the bird species of South America. American Ornithological Society. http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved January 19, 2021
  4. 1 2 3 Krabbe, N., T. S. Schulenberg, and C. J. Sharpe (2020). Stresemann's Bristlefront (Merulaxis stresemanni), 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.strbri1.01 retrieved July 13, 2021
  5. 1 2 3 BirdLife species factsheet for Merulaxis stresemanni
  6. "Expansion of Brazilian reserve protects some of the world's rarest birds". Birdguides. 7 January 2016. Retrieved 7 January 2016.