Blackish nightjar

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Blackish nightjar
(Hydropsalis nigrescens) or (Nyctipolus nigrescens) - Blackish Nightjar.jpg
at Apiacás, Mato Grosso state, Brazil
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Clade: Strisores
Order: Caprimulgiformes
Family: Caprimulgidae
Genus: Nyctipolus
Species:
N. nigrescens
Binomial name
Nyctipolus nigrescens
(Cabanis, 1849)
Nyctipolus nigrescens map.svg
Synonyms

Caprimulgus nigrescens

The blackish nightjar (Nyctipolus nigrescens) is a species of bird in the family Caprimulgidae. It is found in Brazil, Bolivia, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, and Venezuela. [2] [3]

Contents

Taxonomy and systematics

The blackish nightjar was originally placed in genus Caprimulgus, but DNA analyses show that it and its sister species pygmy nightjar (Nyctipolus hirundinaceus) require their own genus. The blackish nightjar is monotypic. [4] [5]

Description

The blackish nightjar is 19.5 to 21.5 cm (7.7 to 8.5 in) long and weighs 32 to 39 g (1.1 to 1.4 oz). Its upperparts are blackish brown with tawny, grayish white, and cinnamon spots. Its tail is dark brown with indistinct lighter bars and mottling and (on the male) a white tip. The underparts to the belly are dark brown with paler baring; the belly and flanks are buffy with darker barring. The throat has a small white patch on either side. In flight the wing shows a small white band. [5]

Distribution and habitat

The blackish nightjar is found east of the Andes in Peru, Ecuador, and southern Colombia, and across southern Colombia through southern Venezuela and the Guianas into northeastern and north-central Brazil. They inhabit lowland evergreen forest, but are mostly found on or near open rock outcroppings or on sand and gravel bars along small rivers. In elevation it ranges from sea level in Brazil to 900 m (3,000 ft) in Bolivia, 800 m (2,600 ft) in Colombia, 1,200 m (3,900 ft) in Ecuador, and 1,100 m (3,600 ft) in Venezuela. [5]

Behavior

Feeding

The blackish nightjar is crepuscular and nocturnal. It forages on the wing from dusk to dawn over rock outcrops and above the forest canopy. It has also been recorded on foot picking prey from large rocks. Its diet has not been detailed but is known to include moths and beetles. During the day it roosts on rocks or fallen trees. [5]

Breeding

The blackish nightjar's breeding season varies across its range but almost everywhere is during the long dry season of August to November. Males display to females by erecting the tail to show the white markings. Females lay a single egg, usually in a depression in bare rock though occasionally on bare sand or soil. They nest singly or sometimes in small loose colonies. [5]

Vocalization

The blackish nightjar's song is short, "a soft, purring pu'r'r'r'r't or qu'r'r'r'rt". During the mating display both the male and female sing. They also make a cluck or ptink alarm call and a "guttural hissing" threat display. [5]

Status

The IUCN has assessed the blackish nightjar as being of Least Concern. Though its population size is not known, it is believed to be stable. [1] It is common to abundant in suitable habitat. [5]

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References

  1. 1 2 BirdLife International (2016). "Blackish Nightjar Nyctipolus nigrescens". IUCN Red List of Threatened Species . 2016. Retrieved 5 October 2021.
  2. ↑ Gill, F.; Donsker, D.; Rasmussen, P. (July 2021). "IOC World Bird List (v 11.2)" . Retrieved July 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 24 August 2021. Species Lists of Birds for South American Countries and Territories. https://www.museum.lsu.edu/~Remsen/SACCCountryLists.htm retrieved August 24, 2021
  4. ↑ 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 August 2021. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved August 24, 2021
  5. 1 2 3 4 5 6 7 Bemis, K. (2020). Blackish Nightjar (Nyctipolus nigrescens), 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.blanig1.01 retrieved October 5, 2021
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