Slender antbird: Difference between revisions
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{{Short description|Species of bird}} |
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{{Taxobox |
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{{Use American English|date=August 2024}} |
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{{Speciesbox |
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| regnum = [[Animalia]] |
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| image = Slender Antbird Rhopornis ardesiaca.jpg |
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| phylum = [[Chordata]] |
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| status = EN |
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| ordo = [[Passeriformes]] |
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| status_ref = <ref name=IUCN>{{cite iucn |author=BirdLife International |date=2016 |title=Slender Antbird ''Rhopornis ardesiacus'' |volume=2016 |page=e.T22701706A93845408 |doi=10.2305/IUCN.UK.2016-3.RLTS.T22701706A93845408.en |access-date=18 August 2024}}</ref> |
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| familia = [[Thamnophilidae]] |
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| genus = |
| genus = Rhopornis |
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| parent_authority = [[Charles Wallace Richmond|Richmond]], 1902 |
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| species = '''''R. ardesiacus''''' |
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| species = ardesiacus |
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| authority = ([[Maximilian zu Wied-Neuwied|Wied]], 1831) |
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| synonyms = |
| synonyms = |
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''Rhopornis ardesiaca'' <small>(Wied, 1831) (''[[lapsus]]'')</small> |
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The ''' |
The '''slender antbird''' ('''''Rhopornis ardesiacus''''') is an [[Endangered species (IUCN status)|Endangered]] species of bird in subfamily Thamnophilinae of family [[Thamnophilidae]], the "typical antbirds". It is [[endemic]] to [[Brazil]].<ref name=IUCN/><ref name=IOC14.1>{{cite web |url=https://www.worldbirdnames.org/new/bow/antbirds/ |title=Antbirds |website=IOC World Bird List |version =v 14.1 | 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=January 2024 |access-date=4 January 2024 }}</ref> |
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==Taxonomy and systematics== |
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The slender antbird was [[Species description|described]] in 1831 as ''Myiothera ardesiaca''.<ref>{{cite book | last =Weid | first =Maximilia, Prinzen zu | title =Beiträge zur Naturgeschichte von Brasilien | volume =Zweite Abtheilung | date =1831 | location =Weimar | pages =1055–1057 | language =German | url =https://www.biodiversitylibrary.org/page/2783803 }}</ref> Its current genus '''''Rhopornis''''' was erected in 1902.<ref>{{cite journal |last=Richmond |first=Charles W. |date=1902 |title=Note on the name Rhopocichla |url=https://www.biodiversitylibrary.org/page/2364955 |journal=Proc.Biol.Soc.Wash. |volume=XV |pages=35 |access-date=August 18, 2024 }}</ref> The slender antbird is the only member of its genus and has no subspecies.<ref name=IOC14.1/> |
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==Description== |
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The slender antbird is {{convert|18|to|19|cm|in|sigfig=2|abbr=on}} long and weighs {{convert|23|to|28|g|oz|sigfig=2|abbr=on}}. Adults of both sexes have bright red irises. Males have gray crown and upperparts. Their wings and tail are blackish gray with white edges on the tips of the wing [[coverts]]. Their face is mostly gray with a paler "moustache". Their throat is black and their underparts mostly pale gray that is darker on their flanks and [[crissum]]. Females have a russet crown and nape, a white throat, and paler underparts than males. Their upperparts, wings, and tail are like the male's.<ref name=SLAN-BOW>Zimmer, K., M.L. Isler, and C. J. Sharpe (2020). Slender Antbird (''Rhopornis ardesiacus''), 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.sleant1.01 retrieved August 18, 2024</ref><ref name=vanPerlo>{{cite book | last =van Perlo | first = Ber| title =A Field Guide to the Birds of Brazil | publisher =Oxford University Press | date =2009 | location =New York | pages =254–255 | isbn =978-0-19-530155-7 }}</ref> |
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==Distribution and habitat== |
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The slender antbird is found discontinuously in southeastern [[Bahia]] and northeastern [[Minas Gerais]] states of eastern Brazil. It primarily inhabits the understorey of dry forest known locally as ''mata-de-cipó'', which is characterized by a somewhat open understorey with large patches of terrestrial [[bromeliad]]s. It also is found in the [[ecotone]]s between that biome and both more humid forest and ''[[caatinga]]'' scrublands. In elevation it occurs between {{convert|100|and|1000|m|ft|-2|abbr=on}} above sea level.<ref name=SLAN-BOW/><ref name=vanPerlo/><ref name=Ribon>Ribon, R. and Maldonado-Coelho, M. (2001). Range extension for Slender Antbird Rhopornis ardesiaca with comments on external morphology of adults. Cotinga 16: 52–56.</ref> |
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==Behavior== |
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===Movement=== |
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The slender antbird is a year-round resident throughout its range.<ref name=SLAN-BOW/> |
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===Feeding=== |
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The slender antbird feeds on a variety of insects and spiders. It typically forages singly, in pairs, or in family groups in dense vegetation, mostly on the ground and within about {{convert|4|m|ft|0|abbr=on}} above it but occasionally as high as {{convert|7|m|ft|0|abbr=on}}. It hops between short feeding stops, pumping its tail. It captures prey by gleaning, reaching, jumping (upward and to the ground), lunging from a perch, and by searching leaf litter in bromeliads.<ref name=SLAN-BOW/> |
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===Breeding=== |
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The slender antbird's breeding season is thought to span from October to February.<ref name=SLAN-BOW/> Its one known nest was a low cup made of dry leaves and vines resting on a leaf that drooped to the ground. It contained two red-spotted pale pink eggs. Both parents incubated the clutch; the incubation period was at least 13 days. The time to fledging was not determined because the nest was empty, apparently predated, six days after the young hatched.<ref>Luiz, E.R. (2008). Reproductive notes on the Slender Antbird ''Rhopornis ardesiacus''. Cotinga. 30: 65–67.</ref> |
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{{birdsong|url=https://xeno-canto.org/species/Rhopornis-ardesiacus |species=the slender antbird}} |
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===Vocalization=== |
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The slender antbird's song is a "very high, loud, increasing series of 7-9 rather sharp 'peer' notes without intervals".<ref name=vanPerlo/> Both sexes sing it, with the female starting during the male's song bout. The species' calls include "an abrupt, indistinct compound note sounding like 'brrt', a sharp upslurred 'seep', soft chatters, and [a] short (e.g. 0·9 seconds) chattering rattle that decelerates".<ref name=SLAN-BOW/> |
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==Status== |
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==References==<!-- RevBrasOrnitol14:297. --> |
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* BirdLife International 2004. [http://www.iucnredlist.org/search/details.php/19691/all Rhopornis ardesiacus]. [http://www.iucnredlist.org 2006 IUCN Red List of Threatened Species. ] Downloaded on 27 July 2007. |
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The [[IUCN]] originally in 1988 assessed the slender antbird as Threatened but since 1994 as Endangered. It has "a very small and severely fragmented range [with] records from few locations". Its estimated population of between 600 and 1700 mature individuals is believed to be decreasing. "Dry forest in east Bahia has been reduced to scattered fragments by rapid and continuing clearance for cattle pasture as well as clearance for firewood by local communities [and] much of what remains is apparently unsuitable for the species since many woodlots are highly disturbed by livestock."<ref name=IUCN/> Though its nominal total range covers about {{convert|20000|km2|sqmi|abbr=on}}, it actually inhabits areas totaling less than {{convert|500|km2|sqmi|abbr=on}}.<ref>Luiz, E.R., dos Santos, S.S., Flores, F.M., Zorzin, G., Ferreira, H.M., Camurugi, E., de Carvalho, H.D.S. and Ribon, R.R. (2015). Geographic distribution, population size, conservation status and type locality of Slender Antbird ''Rhopornis ardesiacus''. Cotinga. 37: 101–106.</ref> It does occur in Boa Nova National Park but "[f]urther protected areas are needed, particularly in remnant forests of Minas Gerais".<ref name=SLAN-BOW/> |
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{{Commons|Rhopornis ardesiacus}} |
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==References== |
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{{Commons}} |
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[[Category:Rhopornis]] |
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{{Reflist}} |
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==External links== |
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{{Passeriformes|T.|state=collapsed}} |
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{{Thamnophilidae-stub}} |
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{{Taxonbar|from=Q781363}} |
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[[Category:Thamnophilidae|slender antbird]] |
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[[Category:Birds of the Atlantic Forest]] |
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[[nl:Rhopornis]] |
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[[pt:Gravatazeiro]] |
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[[Category:Birds described in 1831|slender antbird]] |
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[[ru:Гевары]] |
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[[Category:Taxonomy articles created by Polbot]] |
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Latest revision as of 16:59, 18 August 2024
| Slender antbird | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Passeriformes |
| Family: | Thamnophilidae |
| Genus: | Rhopornis Richmond, 1902 |
| Species: | R. ardesiacus
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| Binomial name | |
| Rhopornis ardesiacus (Wied, 1831)
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The slender antbird (Rhopornis ardesiacus) is an Endangered species of bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is endemic to Brazil.[1][2]
Taxonomy and systematics
[edit]The slender antbird was described in 1831 as Myiothera ardesiaca.[3] Its current genus Rhopornis was erected in 1902.[4] The slender antbird is the only member of its genus and has no subspecies.[2]
Description
[edit]The slender antbird is 18 to 19 cm (7.1 to 7.5 in) long and weighs 23 to 28 g (0.81 to 0.99 oz). Adults of both sexes have bright red irises. Males have gray crown and upperparts. Their wings and tail are blackish gray with white edges on the tips of the wing coverts. Their face is mostly gray with a paler "moustache". Their throat is black and their underparts mostly pale gray that is darker on their flanks and crissum. Females have a russet crown and nape, a white throat, and paler underparts than males. Their upperparts, wings, and tail are like the male's.[5][6]
Distribution and habitat
[edit]The slender antbird is found discontinuously in southeastern Bahia and northeastern Minas Gerais states of eastern Brazil. It primarily inhabits the understorey of dry forest known locally as mata-de-cipó, which is characterized by a somewhat open understorey with large patches of terrestrial bromeliads. It also is found in the ecotones between that biome and both more humid forest and caatinga scrublands. In elevation it occurs between 100 and 1,000 m (300 and 3,300 ft) above sea level.[5][6][7]
Behavior
[edit]Movement
[edit]The slender antbird is a year-round resident throughout its range.[5]
Feeding
[edit]The slender antbird feeds on a variety of insects and spiders. It typically forages singly, in pairs, or in family groups in dense vegetation, mostly on the ground and within about 4 m (13 ft) above it but occasionally as high as 7 m (23 ft). It hops between short feeding stops, pumping its tail. It captures prey by gleaning, reaching, jumping (upward and to the ground), lunging from a perch, and by searching leaf litter in bromeliads.[5]
Breeding
[edit]The slender antbird's breeding season is thought to span from October to February.[5] Its one known nest was a low cup made of dry leaves and vines resting on a leaf that drooped to the ground. It contained two red-spotted pale pink eggs. Both parents incubated the clutch; the incubation period was at least 13 days. The time to fledging was not determined because the nest was empty, apparently predated, six days after the young hatched.[8]
Vocalization
[edit]The slender antbird's song is a "very high, loud, increasing series of 7-9 rather sharp 'peer' notes without intervals".[6] Both sexes sing it, with the female starting during the male's song bout. The species' calls include "an abrupt, indistinct compound note sounding like 'brrt', a sharp upslurred 'seep', soft chatters, and [a] short (e.g. 0·9 seconds) chattering rattle that decelerates".[5]
Status
[edit]The IUCN originally in 1988 assessed the slender antbird as Threatened but since 1994 as Endangered. It has "a very small and severely fragmented range [with] records from few locations". Its estimated population of between 600 and 1700 mature individuals is believed to be decreasing. "Dry forest in east Bahia has been reduced to scattered fragments by rapid and continuing clearance for cattle pasture as well as clearance for firewood by local communities [and] much of what remains is apparently unsuitable for the species since many woodlots are highly disturbed by livestock."[1] Though its nominal total range covers about 20,000 km2 (7,700 sq mi), it actually inhabits areas totaling less than 500 km2 (190 sq mi).[9] It does occur in Boa Nova National Park but "[f]urther protected areas are needed, particularly in remnant forests of Minas Gerais".[5]
References
[edit]
- ^ a b c BirdLife International (2016). "Slender Antbird Rhopornis ardesiacus". IUCN Red List of Threatened Species. 2016: e.T22701706A93845408. doi:10.2305/IUCN.UK.2016-3.RLTS.T22701706A93845408.en. Retrieved 18 August 2024.
- ^ a b Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (January 2024). "Antbirds". IOC World Bird List. v 14.1. Retrieved 4 January 2024.
- ^ Weid, Maximilia, Prinzen zu (1831). Beiträge zur Naturgeschichte von Brasilien (in German). Vol. Zweite Abtheilung. Weimar. pp. 1055–1057.
{{cite book}}: CS1 maint: multiple names: authors list (link) - ^ Richmond, Charles W. (1902). "Note on the name Rhopocichla". Proc.Biol.Soc.Wash. XV: 35. Retrieved August 18, 2024.
- ^ a b c d e f g Zimmer, K., M.L. Isler, and C. J. Sharpe (2020). Slender Antbird (Rhopornis ardesiacus), 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.sleant1.01 retrieved August 18, 2024
- ^ a b c van Perlo, Ber (2009). A Field Guide to the Birds of Brazil. New York: Oxford University Press. pp. 254–255. ISBN 978-0-19-530155-7.
- ^ Ribon, R. and Maldonado-Coelho, M. (2001). Range extension for Slender Antbird Rhopornis ardesiaca with comments on external morphology of adults. Cotinga 16: 52–56.
- ^ Luiz, E.R. (2008). Reproductive notes on the Slender Antbird Rhopornis ardesiacus. Cotinga. 30: 65–67.
- ^ Luiz, E.R., dos Santos, S.S., Flores, F.M., Zorzin, G., Ferreira, H.M., Camurugi, E., de Carvalho, H.D.S. and Ribon, R.R. (2015). Geographic distribution, population size, conservation status and type locality of Slender Antbird Rhopornis ardesiacus. Cotinga. 37: 101–106.
