Dot-backed antbird

File:Hylophylax punctulatus Castelnau.jpg

The dot-backed antbird is monotypic. It shares genus Hylophylax with the spotted antbird (H. naevioides) and spot-backed antbird (H. naevius). The population in central Brazil south of the Amazon is sometimes treated as subspecies H. p. subochraceous.Zimmer, K. and M.L. Isler (2020). Dot-backed Antbird (Hylophylax punctulatus), 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.dobant2.01 retrieved July 24, 2024

File:Hylophylax punctulatus - Dot-backed Antbird (male); Atalaia do Norte, Amazonas, Brazil (cropped).jpg

The dot-backed antbird is {{convert|10|to|11.5|cm|in|sigfig=2|abbr=on}} long and weighs {{convert|11|to|13|g|oz|sigfig=2|abbr=on}}. Adult males have a dark rufous-brown crown, nape, and mantle with a white patch between their scapulars. Their back and rump are black with large white feather tips. Their flight feathers are dark brown with wide rufous-brown edges and their wing coverts black with wide white to pale buff tips. Their tail is black with white feather tips. Their face is mostly white; their throat and the lower sides of their neck are black. Their underparts are mostly white with heavy black spots across the breast and along the sides. Their lower belly and undertail coverts have a buffy-olive tinge. "H. p. subochraceous" has more yellow-brown upperparts and a more ochraceous belly, though these colors are at the end of a range rather than completed distinct. Adult females are overall paler than males, with pale buff wing covert tips, a white throat with a black line above it, and a buffy belly.{{cite book | last1 =McMullan | first1 =Miles | last2 =Donegan | first2 =Thomas M. | last3 =Quevedo | first3 =Alonso | title = Field Guide to the Birds of Colombia | publisher = Fundación ProAves| date =2010 | location =Bogotá | pages =140 |isbn =978-0-9827615-0-2 }}{{cite book | last =Ridgely | first =Robert S. | last2 =Greenfield | first2 =Paul J. | title =The Birds of Ecuador: Field Guide | publisher =Cornell University Press | volume = II| date =2001 | location =Ithaca | pages =421–422 | isbn =978-0-8014-8721-7 }}Schulenberg, T.S., D.F. Stotz, D.F. Lane, J.P. O’Neill, and T.A. Parker III. 2010. Birds of Peru. Revised and updated edition. Princeton University Press, Princeton, New Jersey. Plate 175.{{cite book | last =Hilty | first =Steven L. | title =Birds of Venezuela | publisher =Princeton University Press | edition =second | date =2003 | location =Princeton NJ | pages =Plate 44 | language =English }}{{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 =260–261 | isbn =978-0-19-530155-7 }}

The dot-backed antbird is found in southern Venezuela, southern and far eastern Colombia, eastern Ecuador, northeastern and southeastern Peru, northern and eastern Bolivia, and western and southern Amazonian Brazil. Though some sources also place it in GuyanaAleixo, A., Poletto, F., Lima, M.F.C., Castro, M., Portes, E. and Miranda, L.S. (2011). Notes on the vertebrates of northern Pará, Brazil: a forgotten part of the Guianan Region, II. Avifauna. Bol. Mus. Para. Emílio Goeldi. Ciênc. Nat. 6(1): 11–65 or French GuianaCHG (2015). Liste des Oiseaux de Guyane - version janvier 2015. URL: http://www.gepog.org/sites/default/files/fichiers/photos_chants/listes/CHG_2015.pdf (download Apr 2015). In French., the South American Classification Committee of the American Ornithological Society and the Clements taxonomy do not recognized any records in those countriesClements, J. F., P.C. Rasmussen, T. S. Schulenberg, M. J. Iliff, T. A. Fredericks, J. A. Gerbracht, D. Lepage, A. Spencer, S. M. Billerman, B. L. Sullivan, and C. L. Wood. 2023. The eBird/Clements checklist of birds of the world: v2023. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/ retrieved October 28, 2023.

The dot-backed antbird inhabits the understorey of lowland evergreen forest, primarily blackwater várzea forest and also swampy areas, the edges of oxbow lakes, and in transitional forest along small watercourses. In elevation it reaches {{convert|300|m|ft|-2|abbr=on}} in Venezuela, Colombia, and Ecuador.

The dot-backed antbird is believed to be a year-round resident throughout its range.

The dot-backed antbird feeds primarily on a variety insects and probably also spiders. They forage as individuals, pairs, and small family groups and mostly within about {{convert|4|m|ft|0|abbr=on}} of the ground and seldom with mixed-species feeding flocks. They hop among branches, typically in semi-open parts of the understorey, and take prey with sallies from a perch to the ground and by gleaning and lunging for prey on leaves, twigs, and branches. They occasionally attend army ant swarms as the ants traverse their territory.

The dot-backed antbird's breeding season has not been determined though it includes August and January in parts of Brazil. Nothing else is known about the species' breeding biology.

{{birdsong|url=https://xeno-canto.org/species/Hylophylax-punctulatus |species=the dot-backed antbird}}

The male dot-backed antbird's song is "a series of doublets each about 0·5 seconds long of 2 somewhat similar sharp whistles, the first emphasizing an upslur and the second a downslur, sounding like “free beer”, delivered at rate of c. 1 every 2 seconds, sometimes for minutes at a time, doublet often given singly". Its note has also been written as "whee-beéyur" and "wee-HEEew". Its calls include "sharp 'psit' notes" in series, "a long downslurred whistle", and "variable chattering notes".

The IUCN has assessed the dot-backed antbird as being of Least Concern. It has a very large range; its population size is not known and is believed to be decreasing. No immediate threats have been identified. It is considered uncommon to locally fairly common and patchily distributed in most of its range. It occurs in some protected areas. "More surveys are needed in order to clarify the distribution of this poorly known and perhaps under-recorded species."

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Category:Hylophylax

Category:Birds of the Amazon rainforest

Category:Birds described in 1856

Category:Taxonomy articles created by Polbot