Peruvian thick-knee

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Peruvian thick-knee
Peruvian Thick-knee (Burhinus superciliaris), crop.jpg
at Santa Cruz de Flores, Lima, Peru
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Charadriiformes
Family: Burhinidae
Genus: Hesperoburhinus
Species:
H. superciliaris
Binomial name
Hesperoburhinus superciliaris
(Tschudi, 1843)
Burhinus superciliaris map.svg
  range (year-round resident)

The Peruvian thick-knee (Hesperoburhinus superciliaris) is a species of bird in the family Burhinidae. It is found in Chile, Ecuador, and Peru. Its natural habitats are subtropical or tropical dry shrubland, subtropical or tropical seasonally wet or flooded lowland grassland, and pastureland. It is a ground-dwelling bird and feeds on insects and small animals.

Contents

Taxonomy

The Peruvian thick-knee was formally described in 1843 by the Swiss naturalist Johann Jakob von Tschudi from a specimen collected in the coastal region of Peru. He coined the binomial name Oedicnenus superciliaris (the genus name is a typographic error for Oedicnemus). [2] The specific epithet is Modern Latin meaning "eyebrowed" (supercillium is the Latin word for "eyebrow"). [3] The Peruvian thick-knee is now placed in the genus Burhinus that was erected in 1811 by the German zoologist Johann Karl Wilhelm Illiger. [4] [5] In IOC 14.1, the Peruvian thick-knee was transferred to the newly described genus Hesperoburhinus . [6] The species is monotypic: no subspecies are recognised. [5]

Description

This medium-sized bird has brownish-grey plumage with brown streaks and spots. The underparts are white and the legs are yellow and long. There is a white streak through the eye with a black upper border. The short beak has a black tip. The length is about 40 cm (16 in). [7]

Distribution and habitat

The Peruvian thick-knee is found in South America in the coastal strip between the Pacific Ocean and the Andes. Its range extends from northern Chile, through Peru to southern Ecuador. Its typical habitat is semi-desert areas, agricultural land, dry pasture or well-vegetated river valleys. It particularly favours open crops such as alfalfa or corn. [7] [8]

Behaviour

The Peruvian thick-knee is most active at night. The diet is not known but the bird moves about on the ground foraging, probably feeding on insects, small lizards and other small animals. [9] It runs across the ground in a manner similar to an ostrich. [7] It roosts in the open during the day, remaining motionless and difficult to spot as it is well-camouflaged by its brownish plumage. Its presence in an area may be most easily detected by its distinctive three-toed footprints in soft sand, and at night by its calls which are somewhat reminiscent of a lapwing (Vanellus sp.). [8]

Little is known of the reproduction of this species [9] but a nest containing two eggs has been observed in June on the Cerros de Naupe, a range of low mountains in Peru. The nesting site was on a dry, sparsely-vegetated slope with clumps of shrubs and cacti. The nest was a scrape in the ground with the area around it cleared of debris. The eggs were cream-coloured with blotches of tan and darker brown and measured approximately 53 by 39 millimetres (2.1 in × 1.5 in). One parent was incubating the eggs while the other stood in the shade a few metres away. [10]

Status

The IUCN has listed the Peruvian thick-knee as being of "least concern". This is because, although it is confined to a somewhat restricted range the bird is quite common, especially in the northern part of that range, and although the population trend is unknown, the bird does not appear to qualify for a more threatened category. [1] [9]

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References

  1. 1 2 BirdLife International (2016). "Burhinus superciliaris". IUCN Red List of Threatened Species . 2016: e.T22693597A93415005. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22693597A93415005.en . Retrieved 12 November 2021.
  2. Tschudi, Johann Jakob von (1843). "Diagnosen einiger neuer peruanischer vögel". Archiv für Naturgeschichte (in Latin). 9 (1): 385–390 [387–388].
  3. Jobling, James A. (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p. 374. ISBN   978-1-4081-2501-4.
  4. Illiger, Johann Karl Wilhelm (1811). Prodromus systematis mammalium et avium (in Latin). Berolini [Berlin]: Sumptibus C. Salfeld. p. 250.
  5. 1 2 Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (January 2021). "Buttonquail, thick-knees, sheathbills, plovers, oystercatchers, stilts, painted-snipes, jacanas, Plains-wanderer, seedsnipes". IOC World Bird List Version 11.1. International Ornithologists' Union. Retrieved 1 June 2021.
  6. International Ornithologists' Union. Gill, Frank; Donsker, David; Rasmussen, Pamela (eds.). "IOC World Bird List 14.1" (xlsx). Retrieved 2023-12-20.
  7. 1 2 3 "Huerequeque (Burhinus superciliaris)". Aves del Peru (in Spanish). Peru Ecologico. Retrieved 2014-08-07.
  8. 1 2 "Burhinus superciliaris". Neotropical Birds. Cornell Lab of Ornithology. 2010. Retrieved 23 August 2014.
  9. 1 2 3 Hume, R. (1996). del Hoyo, J.; Elliott, A.; Sargatal, J.; Christie, D.A.; de Juana, E. (eds.). "Peruvian Thick-knee: Burhinus superciliaris" . Birds of the World. Retrieved 24 August 2014.
  10. Williams, Morris D. (1981). "Description of the Nest and Eggs of the Peruvian Thick-Knee (Burhinus superciliaris)". The Condor. 83 (2): 183–184. doi:10.2307/1367428. JSTOR   1367428.