Venezuelan bristle tyrant

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Venezuelan bristle tyrant
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Tyrannidae
Genus: Pogonotriccus
Species:
P. venezuelanus
Binomial name
Pogonotriccus venezuelanus
Berlepsch, 1907
Phylloscartes venezuelanus map.svg

The Venezuelan bristle tyrant (Pogonotriccus venezuelanus) is a Near Threatened species of passerine bird in the family Tyrannidae, the tyrant flycatchers. It is endemic to Venezuela. [1] [2]

Contents

Taxonomy and systematics

The Venezuelan bristle tyrant was originally described as Pogonotriccus venezuelanus. [3] Genus Pogonotriccus was later merged into genus Phylloscartes . Beginning in 2016 taxonomic systems resurected Pogonotriccus for this species and a few others. [4] [5] [6]

The Venezuelan bristle tyrant is monotypic. [2]

Description

The Venezuelan bristle tyrant is about 11.5 cm (4.5 in) long and weighs 8 to 9 g (0.28 to 0.32 oz). The sexes have the same plumage. Adults have a gray crown, yellowish white lores, and a prominent yellowish white eye-ring on an otherwise mottled yellowish face. Their ear coverts have a blackish crescent at the top and rear. Their back and rump are olive. Their wings are blackish with pale yellow edges on the flight feathers. Their wing coverts are blackish with pale yellow tips that show as two wing bars. Their tail is olive. Their throat and underparts are bright yellow with a very light olive wash on the breast. Both sexes have a brown iris, a long, pointed, blackish bill with a whitish or pinkish base to the mandible, and gray legs and feet. [7] [8]

Distribution and habitat

The Venezuelan bristle tyrant has two separate ranges in Venezuela. On is in the coastal mountains from Carabobo through Aragua into the Federal District. The other is in the interior mountains of southern Aragua and Miranda states. The species inhabits humid montane forest where it favors mid-elevation cloudforest heavy with mosses. In elevation it ranges between 950 and 1,400 m (3,100 and 4,600 ft). [7] [8]

Behavior

Movement

The Venezuelan bristle tyrant is a year-round resident throughout its range. [7]

Feeding

The Venezuelan bristle tyrant feeds on arthropods. It forages in the forest's mid-story up into the lower canopy, typically perching upright and making short upward sallies to snatch or hover-glean prey from vegetation. It usually forages singly or in pairs and usually as part of a mixed-species feeding flock. [7] [8]

Breeding

The Venezuelan bristle tyrant is thought to breed between January and April or May. Nothing else is known about the species' breeding biology. [7]

Vocalization

The Venezuelan bristle tyrant's song is "a fast trill, ch'e'e'e'e'd'd'd'd'd'e'e'eWEEP!" and its call a "soft double-noted...che'dip". [8]

Status

The IUCN has assessed the Venezuelan bristle tyrant as Near Threatened. It has a small range; its population size is not known and is believed to be decreasing. "Although there is still extensive forest cover in parts of its limited range, deforestation has been severe around Caracas, and many other areas have also been degraded ". [1] It is considered fairly common [8] and occurs in at least one national park and probably also in other protected areas [7] .

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References

  1. 1 2 3 BirdLife International (2021). "Venezuelan Bristle-tyrant Pogonotriccus venezuelanus". IUCN Red List of Threatened Species . 2021: e.T22699462A171652986. doi: 10.2305/IUCN.UK.2021-3.RLTS.T22699462A171652986.en . Retrieved 5 December 2024.
  2. 1 2 Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (August 2024). "Tyrant flycatchers". IOC World Bird List. v 14.2. Retrieved 19 August 2024.
  3. Graf von Berlepsch, Hans (1905). "Descriptions of New Species and Con-species of Neotropical Birds" (PDF). Proceedings of the Fourth International Ornithological Congress (in Latin and English). XIV: 357–358. Retrieved December 5, 2024.
  4. BirdLife International (2016) Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 9. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/BirdLife_Checklist_Version_90.zip [.xls zipped 1 MB].
  5. Clements, J. F., T. S. Schulenberg, M. J. Iliff, T. A. Fredericks, J. A. Gerbracht, D. Lepage, S. M. Billerman, B. L. Sullivan, and C. L. Wood. 2022. The eBird/Clements checklist of birds of the world: v2022. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/
  6. Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, G. Del-Rio, A. Jaramillo, D. F. Lane, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 31 May 2023. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved June 1, 2023
  7. 1 2 3 4 5 6 Fitzpatrick, J. W. (2022). Venezuelan Bristle-Tyrant (Pogonotriccus venezuelanus), version 1.1. In Birds of the World (N. D. Sly, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.vebtyr2.01.1 retrieved December 5, 2024
  8. 1 2 3 4 5 Hilty, Steven L. (2003). Birds of Venezuela (second ed.). Princeton NJ: Princeton University Press. p. 587.