black-throated spinetail

{{Short description|Species of bird}}

{{Distinguish|black-throated thistletail}}

{{Use American English|date=December 2023}}

{{Use dmy dates|date=January 2024}}

{{Speciesbox

| name = Black-throated spinetail

| image =

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=BirdLife International |date=2022 |title=Black-throated Spinetail Synallaxis castanea |volume=2022 |page=e.T22702369A210843096 |doi=10.2305/IUCN.UK.2022-1.RLTS.T22702369A210843096.en |access-date=8 December 2023}}

| genus = Synallaxis

| species = castanea

| authority = Sclater, PL, 1856

| synonyms =

| range_map = Synallaxis castanea map.svg

}}

The black-throated spinetail (Synallaxis castanea) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is endemic to Venezuela.{{cite web |url=https://www.worldbirdnames.org/new/bow/ovenbirds/ |title=Ovenbirds, woodcreepers |website=IOC World Bird List |version =v 13.2 | editor1-last=Gill | editor1-first=Frank | editor1-link=Frank Gill (ornithologist) | editor2-last=Donsker | editor2-first=David | editor3-last=Rasmussen | editor3-first=Pamela | editor3-link=Pamela Rasmussen |date=July 2023 |access-date=31 July 2023 }}

Taxonomy and systematics

For a period in the mid twentieth century the black-throated spinetail was treated as a subspecies of the rufous spinetail (S. unirufa); they are now known to be sister species.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 26 November 2023. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved 27 November 2023Derryberry, E. P., S. Claramunt, G. Derryberry, R. T. Chesser, J. Cracraft, A. Aleixo, J. Pérez-Emán, J. V. Remsen, Jr., and R. T. Brumfield. (2011). Lineage diversification and morphological evolution in a large-scale continental radiation: the Neotropical ovenbirds and woodcreepers (Aves: Furnariidae). Evolution 65(10):2973–2986. https://doi.org/10.1111/j.1558-5646.2011.01374.x The two of them and the rusty-headed spinetail (S. fuscorufa) have been treated by some authors as a single species.Remsen, Jr., J. V. and P. F. D. Boesman (2023). Rufous Spinetail (Synallaxis unirufa), version 1.1. In Birds of the World (B. K. Keeney, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.rufspi1.01.1 retrieved 8 December 2023

The black-throated spinetail is monotypic.

Description

The black-throated spinetail is {{convert|16|to|18|cm|in|1|abbr=on}} long. It is one of the larger members of genus Synallaxis. The sexes have the same plumage. Adults are mostly bright rufescent. They do have a paler chin and the eponymous solid black throat. Their iris is dark reddish brown, their bill blackish, and their legs and feet blue-gray. Juveniles are duller and browner than adults, with a dull and indistinct throat patch and faint dusky markings on the head and underparts.Remsen, Jr., J. V. (2020). Black-throated Spinetail (Synallaxis castanea), 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.bltspi1.01 retrieved 8 December 2023

Distribution and habitat

The black-throated spinetail is found only in the Venezuelan Coastal Range from Aragua east to the vicinity of Caracas in Miranda. It inhabits montane evergreen forest, secondary forest, and the undergrowth and edges of cloudforest. It is often seen along brushy roadsides and occasionally in stands of Chusquea bamboo. In elevation it ranges between {{convert|1300|and|2200|m|ft|abbr=on}}.

Behavior

=Movement=

The black-throated spinetail is a year-round resident throughout its range.

=Feeding=

The black-throated spinetail's diet is not known in detail but is assumed to be mostly arthropods. It usually forages in pairs and is thought to glean prey from foliage and small branches up to about {{convert|2|m|ft|0|abbr=on}} above the ground.

=Breeding=

The black-throated spinetail breeds between April and July. Nothing else is known about its breeding biology.

{{birdsong|url=https://xeno-canto.org/species/Synallaxis-castanea |species=black-throated spinetail}}

=Vocalization=

The black-throated spinetail's song is "a rapid 'ke-che-che-che-che-che' followed immediately by louder 'ker-chéé-chéé' " and is often sung in duet. Its call is "a loud 'ki-kík' ".

Status

The IUCN has assessed the black-throated spinetail as being of Least Concern. It has a small range; its estimated population of 2500 to 10,000 mature individuals is believed to be stable. No immediate threats have been identified. It is considered fairly common and occurs in two national parks.

References