Collared crescentchest
at Chapada dos Guimarães, Mato Grosso State, Brazil
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Melanopareiidae
Genus: Melanopareia
Species:
M. torquata
Binomial name
Melanopareia torquata
(Wied, 1831)
Melanopareia torquata d'Orbigny 1847

The collared crescentchest (Melanopareia torquata) is a species of bird in the family Melanopareiidae. It is found in Brazil and Paraguay.[2]

Taxonomy and systematics

The crescentchests (genus Melanopareia) were previously included in family Rhinocryptidae, the tapaculos. A 2010 publication confirmed earlier work and created their present genus.[3][4] The International Ornithological Congress (IOC) recognizes two subspecies of the collared crescentchest, the nominate Melanopareia torquata torquata and M. t. rufescens.[2] The South American Classification Committee of the American Ornithological Society (AOS) and the Clements taxonomy consider the double-collared crescentchest (M. bitoquata) to be a third subspecies.[3][5]

Description

The collared crescentchest is 14.5 cm (5.7 in) long. Two unsexed specimens of M. t. rufescens weighed 16.5 and 18.0 g (0.58 and 0.63 oz). The nominate subspecies' back and rump are brown and the underparts buff. The crown of the head is gray brown. It has a narrow white supercilium edged with black, a rufous "collar" on the back of the neck, and a black band across the breast. Subspecies M. t. rufescens is almost identical but its crown is reddish brown.[6]

Distribution and habitat

The collared crescentchest is found primarily in central Brazil but also occurs in far northeastern Paraguay. It inhabits cerrado, a biome characterized by a mix of savannah and woodlands. It prefers wetter open areas and avoids disturbed areas. In elevation it ranges up to 1,400 m (4,600 ft).[6]

Behavior

Feeding

The collared crescentchest's diet has not been described but the species is assumed to be insectivorous.[6]

Breeding

Little is known about the collared crescentchest's breeding phenology. Its nest is a globe of dry grass and leaves placed near the ground. Two eggs are laid and both sexes incubate them and care for nestlings.[6]

Vocalization

Both sexes of collared crescentchest sing year round, usually from atop a low shrub. The song is "a series of 3-6 loud, resonant 'chip' notes" . Its call is "a penetrating churr" .[6]

Status

The IUCN has assessed the collared crescentchest as being of Least Concern.[1] "Despite widespread degradation of cerrado habitat, the population of Collared Crescentchest is believed to be relatively stable throughout its large range."[6]

References

  1. 1 2 BirdLife International (2016). "Collared Crescentchest Melanopareia torquata". IUCN Red List of Threatened Species. 2016. Retrieved 2 May 2021.
  2. 1 2 Gill, F.; Donsker, D.; Rasmussen, P. (January 2021). "IOC World Bird List (v 11.1)". Retrieved January 14, 2021.
  3. 1 2 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. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved January 19, 2021
  4. ↑ Ericson, P.G.P.; Olson, S.L.; Irestedt, M.; Alvarenga, H.; Fjeldså, J. (2010). "Circumscription of a monophyletic family for the tapaculos (Aves: Rhinocryptidae): Psiloramphus [sic] in and Melanopareia out". Journal of Ornithology. 151: 337–345.
  5. ↑ Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2019. The eBird/Clements Checklist of Birds of the World: v2019. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/ Retrieved August 15, 2019
  6. 1 2 3 4 5 6 Drucker, J. (2020). Collared Crescentchest (Melanopareia torquata), version 1.0. In Birds of the World (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.colcre1.01 retrieved May 3, 2021
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